WO1999063974A2 - Selective estrogen receptor modulator in combination with denydroepiandrosterone (dhea) or analogues - Google Patents

Selective estrogen receptor modulator in combination with denydroepiandrosterone (dhea) or analogues Download PDF

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Publication number
WO1999063974A2
WO1999063974A2 PCT/CA1999/000538 CA9900538W WO9963974A2 WO 1999063974 A2 WO1999063974 A2 WO 1999063974A2 CA 9900538 W CA9900538 W CA 9900538W WO 9963974 A2 WO9963974 A2 WO 9963974A2
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Prior art keywords
group
acid
kit
pharmaceutical composition
dhea
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PCT/CA1999/000538
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English (en)
French (fr)
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WO1999063974A3 (en
Inventor
Fernand Labrie
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Endorecherche, Inc.
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Priority to EP99955419A priority Critical patent/EP1083905B1/en
Priority to PL99379648A priority patent/PL195772B1/pl
Priority to JP2000553043A priority patent/JP2002517433A/ja
Priority to IL14017899A priority patent/IL140178A0/xx
Priority to KR1020007014056A priority patent/KR100944261B1/ko
Priority to NZ508801A priority patent/NZ508801A/en
Priority to AT99955419T priority patent/ATE308326T1/de
Priority to HU0103345A priority patent/HU230495B1/hu
Priority to AU42530/99A priority patent/AU4253099A/en
Priority to PL345887A priority patent/PL199798B1/pl
Application filed by Endorecherche, Inc. filed Critical Endorecherche, Inc.
Priority to DE69928104T priority patent/DE69928104T2/de
Priority to MXPA00012306A priority patent/MXPA00012306A/es
Priority to CA002334577A priority patent/CA2334577C/en
Priority to BR9911116-0A priority patent/BR9911116A/pt
Publication of WO1999063974A2 publication Critical patent/WO1999063974A2/en
Publication of WO1999063974A3 publication Critical patent/WO1999063974A3/en
Priority to IL140178A priority patent/IL140178A/en
Priority to NO20006254A priority patent/NO331022B1/no
Priority to HK02101755.1A priority patent/HK1040367B/zh
Priority to IL185087A priority patent/IL185087A0/en
Priority to NO20092730A priority patent/NO332187B1/no

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
    • A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
    • A61K31/5685—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone having an oxo group in position 17, e.g. androsterone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
    • A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/57—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/66—Phosphorus compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/02—Drugs for genital or sexual disorders; Contraceptives for disorders of the vagina
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00—Drugs for skeletal disorders
    • A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
    • A61P19/10—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease for osteoporosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P21/00—Drugs for disorders of the muscular or neuromuscular system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/06—Antihyperlipidemics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P5/00—Drugs for disorders of the endocrine system
    • A61P5/24—Drugs for disorders of the endocrine system of the sex hormones
    • A61P5/26—Androgens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis

Definitions

  • the present invention relates to a method for treating or reducing the likelihood of acquiring osteoporosis, hypercholesterolemia, hyperlipidemia or atherosclerosis using a novel combination therapy on susceptible warm-blooded animals, including humans.
  • the combination includes administering a selective estrogen receptor modulator (SERM) and raising the patient's level of precursor to sex steroids, said precursor being selected from the group consisting of dehydroepiandrosterone (DHEA), dehydroepiandrosterone sulfate (DHEA-S), and androst-5-ene-3 ⁇ ,17 ⁇ -diol (5-diol).
  • SERM selective estrogen receptor modulator
  • DHEA dehydroepiandrosterone
  • DHEA-S dehydroepiandrosterone sulfate
  • 5-diol 5-diol
  • DHEA-S dehydroepiandrosterone sulfate
  • DHEA dehydroepiandrosterone
  • DHEA dehydroepiandrosterone
  • DHEA-S DHEA-sulfate
  • 5-diol 5-diol-S
  • 5-diol fatty acid esters 5-diol fatty acid esters
  • androstenedione in both men and women between the ages of 20 and 80 years.
  • Five-diol is a compound biosynthesized from DHEA through the action of reductive 17 ⁇ - hydroxysteroid dehydrogenase (17 ⁇ -HSD) and is a weak estrogen. It has an 85-fold lower affinity than 17 ⁇ -estradiol (E2) for the estrogen receptor in rat anterior pituitary gland cytosol (Simard and Labrie, J. Steroid Biochem., 26: 539-546, 1987), further confi ⁇ rting the data obtained on the same parameter in human myometrial and breast cancer tissue ( reitmann and Bayard, J.
  • Estrogens have been shown to decrease the rate of bone degradation while androgens have been shown to build bone mass.
  • estrogen replacement therapy commonly used against osteoporosis requires the addition of pro estins to counteract the endometrial proliferation and the risk of endomerrial cancer induced by estrogens.
  • pro estins are thought to increase the risk of breast cancer (Bardon et al., J. Clin. Endocrinol. Metab., 60: 692-697, 1985; Colditz et al., N. Engl. J. Med., 332: 1589-1593, 1995)
  • the use of estrogen-progestin replacement therapy is accepted by a limited number of women and, usually, for too short periods of time.
  • osteoporosis is a clinical manifestation of androgen deficiency in men (Baran et al., Calcif. Tissue Res. 26: 103-106, 1978; Odell and Swerdloff, West J. Med. 124: 446-475, 1976; Smith and Walker, Calif. Tissue Res. 22 (Suppl.): 225-228, 1976). Androgen therapy, as observed with nandrolone decanoate, has been found to increase vertebral bone mineral density in postmenopausal women (Need et al., Arch. Intern. Med., 149: 57-60, 1989).
  • DHEA (450 mg/kg, b.w., 3 times a week) markedly delayed the appearance of breast tumors in C3H mice which were genetically bred to develop breast cancer (Schwartz, Cancer Res. 39: 1129-1132, 1979). Moreover, the risk of developing bladder cancer was found to be increased in men having lower serum DHEA levels (Gordon et al., Cancer Res. 51: 1366-1369, 1991).
  • U.S. Patent Application U.S. 5,550,107 relates to a method of treatment of breast and endometrial cancer in susceptible warm-blooded animals which may include inhibition of ovarian hormonal secretion by surgical means (ovariectomy) or chemical means (use of an LHRH agonist, e.g. [D-Trp ⁇ , des-Gly-NH 10 ]LHRH ethylamide, or antagonist) as part of a combination therapy.
  • an LHRH agonist e.g. [D-Trp ⁇ , des-Gly-NH 10 ]LHRH ethylamide, or antagonist
  • Antiestrogens, androgens, progestins, inhibitors of sex steroid formation (especially of 17 ⁇ -hydroxysteroid dehydrogenase- or aromatase-catalyzed production of sex steroids), inhibitors of prolactin secretion and of growth hormone secretion and ACTH secretion are discussed. A counterpart thereof has been published under international publication number WO 90/10462.
  • cardiovascular diseases have been associated with decreased serum levels of DHEA and DHEA-S and both DHEA and DHEA-S have been suggested to prevent or treat these conditions (Barrett-Connor et al., N. Engl. J. Med. 315: 1519-1524, 1986).
  • DHEA reduced the incidence of atherosclerosis in cholesterol-fed rabbits (Gordon et al., J. Clin. Invest. 82: 712-720, 1988; Arad et al., Arteriosclerosis 9: 159-166, 1989). Moreover, high serum concentrations of DHEA-S have been reported to protect against death from cardiovascular diseases in men (Barrett-Connor et al., N. Engl. J. Med. 315: 1519-1524, 1986). Circulating levels of DHEA and DHEA-S have thus been found to be inversely correlated with mortality from cardiovascular disease (Barrett-Connor et al., N. Engl. J. Med.
  • kits and pharmaceutical compositions suitable for use in the above methods It is another object to provide kits and pharmaceutical compositions suitable for use in the above methods.
  • the invention pertains to a method of treating or reducing the risk of acquiring osteoporosis comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone (DHEA), dehydroepiandrosterone- sulfate (DHEA-S) and androst-5-ene-3 ⁇ ,17 ⁇ -diol (5-diol), in a patient in need of said treatment or said reduction, and further comprising aclministering to said patient a therapeutically effective amount of a selective estrogen receptor modulator (SERM) as part of a combination therapy.
  • DHEA dehydroepiandrosterone
  • DHEA-S dehydroepiandrosterone- sulfate
  • SERM selective estrogen receptor modulator
  • the invention provides a method of treating or reducing the risk of acquiring hypercholesterolemia comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising aclministering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring hyperlipidemia comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring atherosclerosis comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring breast cancer comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring endometrial cancer comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone- sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring uterine cancer comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a method of treating or reducing the risk of acquiring ovarian cancer comprising increasing levels of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol , in a patient in need of said treatment or said reduction, and further comprising administering to said patient a therapeutically effective amount of a selective estrogen receptor modulator as part of a combination therapy.
  • a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate and androst-5-ene-3 ⁇ ,17 ⁇ -diol
  • the invention provides a kit comprising a first container containing a therapeutically effective amount of at least one sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehvdroepiandrosterone-sulfate, androst-5-ene-3 ⁇ ,17 ⁇ -diol and any prodrug that is converted in vivo into any of the foregoing precursors; and further comprising a second container containing a therapeutically effective amount of at least one selective estrogen receptor modulator .
  • the invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising: a) a pharmaceutically acceptable excipient, diluent or carrier; b) a therapeutically effective amount of at least one sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone-sulfate, androst-5-ene-3 ⁇ ,17 ⁇ -diol and a prodrug that is converted in vivo into any of the foregoing sex steroid precursors; and c) a therapeutically effective amount of at least one selective estrogen receptor modulator .
  • the invention provide a method of reducing the risk of acquiring breast cancer comprising adnrinistering, to a patient in need of such reduction a prophylactically effective amount of a selective estrogen receptor modulator.
  • the invention also includes administering a SERM alone, which is shown, for example, in Figure 1 and 2, to provide significant prophylactic effect, even in the absence of adrninistered precursors.
  • Preferred SERMs for this purpose are the same as discussed for other uses herein.
  • Preferred dosages and methods of acLministration are also the same.
  • a selective estrogen receptor modulator is a compound that either directly or through its active metabolite functions as an estrogen receptor antagonist (“antiestrogen”) in breast tissue, yet provides estrogenic or estrogen-like effect on bone tissue and on serum cholesterol levels (i.e. by reducing serum cholesterol).
  • estrogen receptor antagonists include estrogen receptor antagonists, estrogen receptor antagonists, and antiestrogen-like effect on bone tissue and on serum cholesterol levels (i.e. by reducing serum cholesterol).
  • Non-steroidal compounds that function as estrogen receptor antagonists in vitro or in human or rat breast tissue is likely to function as a SERM.
  • steroidal antiestrogens tend not to function as SERMs because they tend not to display any beneficial effect on serum cholesterol.
  • Non- steroidal antiestrogens we have tested and found to function as SERMs include EM-800, EM-01538, Raloxifene, Tamoxifen and Droloxifene.
  • SERMs in accordance with the invention may be adrninistered in the same dosage as known in the art when these compounds are used as antiestrogens.
  • SERMs many of which preferably, have two aromatic rings linked by one to two carbon atoms, are expected to interact with the estrogen receptor bv virtue of the foregoing portion of the molecule that is best recognized by the receptor.
  • Preferred SERMs have side chains which may selectively cause antagonistic properties in breast tissue without having significant antagonistic properties in other tissues.
  • the SERMs may desirably functions as antiestrogens in the breast while surprisingly and desirably functioning as estrogens (or providing estrogen-like activity) in bone and in the blood (where concentrations of lipid and cholesterol are favorably affected).
  • concentrations of lipid and cholesterol are favorably affected.
  • the favorable effect on cholesterol and lipid translates to a favorable effect against atherosclerosis which is known to be adversely, affected by improper levels of cholesterol and lipid.
  • the cancers treated in accordance with the invention respond adversely to estrogenic activity.
  • osteoporosis, hypercholesterolemia, hyperlipidemia, and atherosclerosis respond favorably to estrogenic or estrogen-like activity.
  • SERMs in accordance with the invention, desirable effects are provided in target tissues without undesirable effects in certain other tissues.
  • a SERM can have favorable estrogenic effect in the bone (or on lipid or cholesterol) while avoiding unfavorable estrogenic effect in the breast.
  • a similar synergy is provided against breast, endometrial, ovarian or uterine cancer where the SERM provides desirable antiestrogenic effect and the precursor provides desirable androgenic effect (with any incidental conversion of precursor to estrogen being mitigated by the antiestrogen).
  • Undesirable effects are also mitigated in a synergistic way by the combination used in the invention.
  • any other effect on breast tissues that might otherwise result from estrogens produced by the precursor is mitigated by the antiestrogenic effect of the SERM in breast tissue.
  • progestins are added to provide further androgenic effect.
  • Progestins may be used at low dosages known in the art without adversely affecting receptors other than the androgen receptors (e.g. glucocorticoid receptors). They also are relatively free of unwanted androgenic side effects (such as facial hair with female patients).
  • Preferred SERMs discussed herein relate: (1) to all diseases stated to be susceptible to the invention; (2) to both therapeutic and prophylactic applications; and (3) to preferred pharmaceutical compositions and kits.
  • the precursor is DHEA.
  • the precursor is DHEA-S.
  • the precursor is 5-diol.
  • a patient in need of treatment or of reducing the risk of onset of a given disease is one who has either been diagnosed with such disease or one who is susceptible to acquiring such disease.
  • the preferred dosage of the active compounds (concentrations and modes of adrninistration) of the invention is identical for both therapeutic and prophylactic purposes.
  • the dosage for each active component discussed herein is the same regardless of the disease being treated (or of the disease whose likelihood of onset is being reduced).
  • dosages herein refer to weight of active compounds unaffected by pharmaceutical excipients, diluents, carriers or other ingredients, although such additional ingredients are desirably included, as shown in the examples herein.
  • Any dosage form (capsule, tablet, injection or the like) commonly used in the pharmaceutical industry is appropriate for use herein, and the terms "excipient”, “diluent”, or “carrier” include such nonactive ingredients as are typically included, together with active ingredients in such dosage forms in the industry.
  • typical capsules, pills, enteric coatings, solid or liquid diluents or excipients, flavorants, preservatives, or the like may be included.
  • All of the active ingredients used in any of the therapies discussed herein may be formulated in pharmaceutical compositions which also include one or more of the other active ingredients. Alternatively, they may each be administered separately but sufficiently simultaneous in time so that a patient eventually has elevated blood levels or otherwise enjoys the benefits of each of the active ingredients (or strategies) simultaneously.
  • one or more active ingredients are to be formulated in a single pharmaceutical composition.
  • a kit is provided which includes at least tow separate containers wherein the contents of at least one container differs, in whole or in part, from the contents of at least one other container with respect to active ingredients contained therein.
  • Combination therapies discussed herein also include use of one active ingredient (of the combination) in the manufacture of a medicament for the treatment (or risk reduction) of the disease in question where the treatment or prevention further includes another active ingredient of the combination in accordance with the invention.
  • the invention provides the use of a SERM in the preparation of a medicament for use, in combination with a sex steroid precursor selected from the group consisting of DHEA, DHEA-S, 5-diol, and pro-drugs converted to any of the foregoing sex steroid precursors, in vivo, in the treatment of any of the diseases for which the present combination therapy is believed effective (i.e., breast cancer, endometrial cancer, uterine cancer, ovarian cancer, osteoporosis, hypercholesterolemia, hyperlipidemia, and atherosclerosis).
  • the invention provides the use of a sex steroid precursor selected from the group consisting of DHEA, DHEA-S, 5-diol, and pro-drugs converted to any of the foregoing sex steroid precursors, in vivo, in the preparation of a medicament for use, in combination with a SERM, for treatment of any of those same diseases.
  • a sex steroid precursor selected from the group consisting of DHEA, DHEA-S, 5-diol, and pro-drugs converted to any of the foregoing sex steroid precursors, in vivo, in the preparation of a medicament for use, in combination with a SERM, for treatment of any of those same diseases.
  • DHEA is not utilized as the precursor.
  • EM-800 is not used as the SERM.
  • the combination of DHEA with EM-800 is not used.
  • DHEA is used in combination with EM-1538.
  • Figure 1 shows the effect of treatment with DHEA (10 mg, percutaneously, once daily) or EM-800 (75 ⁇ g, orally, once daily) alone or in combination for 9 months on the incidence of DMBA-induced mammary carcinoma in the rat throughout the 279-day observation period. Data are expressed as percentage of the total number of animals each group.
  • Figure 2 shows the effect of treatment with DHEA (10 mg, percutaneously, once daily) or EM-800 (75 ⁇ g, orally, once daily) alone or in combination for 9 months on average tumor number per tumor-bearing animal (A) and on average tumor size per tumor-bearing rat (B) throughout the 279-day observation period. Data are expressed as the means ⁇ SEM.
  • Figure 3 shows the effect of treatment with DHEA (10 mg, percutaneously, once daily) or EM-800 (75 ⁇ g, orally, once daily) alone or in combination for 9 months on serum triglyceride (A) and cholesterol (B) levels in the rat. Data are expressed as the means ⁇ SEM. **: P ⁇ 0.01 experimental versus respective control.
  • Figure 4 shows: A) Effect of increasing doses of DHEA (0.3 mg, 1.0 mg or 3.0 mg) adrninistered percutaneously twice daily on average ZR-75-1 tumor size in ovariectomized (OVX) nude mice supplemented with estrone. Control OVX mice receiving the vehicle alone are used as additional controls. The initial tumor size was taken as 100%. DHEA was administered percutaneously (p.c.) in a 0.02 ml solution of 50% ethanol - 50% propylene glycol on the dorsal skin.
  • DHEA was administered percutaneously (p.c.) in a 0.02 ml solution of 50% ethanol - 50% propylene glycol on the dorsal skin.
  • Figure 5 shows the effect of increasing oral doses of the antiestrogen EM-800 (15 ⁇ g, 50 ⁇ g or 100 ⁇ g) (A) or of percutaneous adrninistration of increasing doses of DHEA (0.3, 1.0 or 3.0 mg) combined with EM-800 (15 ⁇ g) or EM-800 alone (B) for 9.5 months on average ZR- 75-1 tumor size in ovariectomized(OVX) nude mice supplemented with estrone. The initial tumor size was taken as 100%. Control OVX mice receiving the vehicle alone were used as additional controls.
  • Estrone was administered subcutaneously at the dose of 0.5 ⁇ g once daily while DHEA was dissolved in 50% ethanol - 50% propylene glycol and applied on the dorsal skin area twice daily in a volume of 0.02 ml. Comparison is also made with OVX animals receiving the vehicle alone.
  • Figure 6 shows the effect of 12-month treatment with dehydroepiandrosterone (DHEA) alone or in combination with Flutamide or EM-800 on trabecular bone volume in ovariec t omized rats. Intact animals are added as additional controls. Data are presented as mean ⁇ SEM ** p ⁇ 0.01 versus OVX Control.
  • DHEA dehydroepiandrosterone
  • Figure 7 shows the effect of 12-month treatment with dehydroepiandrosterone (DHEA) alone or in combination with Hutamide or EM-800 on trabecular number in ovariectomized rats. Intact animals are added as additional controls. Data are presented as mean ⁇ SEM ** p ⁇ 0.01 versus OVX Control.
  • DHEA dehydroepiandrosterone
  • Figure 8 shows proximal tibia metaphyses from intact control (A), ovariectomized control (B), and ovariectomized rats treated with DHEA alone (Q or in combination with Hutamide (D) or EM-800 (E).
  • D Hutamide
  • E Hutamide
  • T trabecular bone
  • T trabecular bone volume
  • E trabecular bone volume
  • Figure 9 shows the effect of increasing doses (0.01, 0.03, 0.1, 0.3, and 1 mg/kg) of EM-800, EM-1538 and Raloxifene (EM-1105) administered per os daily for 4 days on cholesterol level of ovariectomized rat.
  • Figure 10 shows the effect of 34-week treatment with dehydroepiandrosterone (DHEA) alone or in combination with EM-1538 (EM-652.HC1) on lumbar spine BMD in ovariectomized rats. Intact animals are added as additional controls. Data are presented as mean ⁇ SEM ** p ⁇ 0.01 versus OVX Control.
  • DHEA dehydroepiandrosterone
  • Figure 11 shows the combined effects of the SERM (EM-652) and DHEA on parameters of menopause. No negative effect is expected.
  • Figure 12 shows the plasma concentration of DHEA (ng/mL) (Y axis) in function of time (X-axis) after a single oral absorption of preferred sex steroid precursors of the invention(150 ⁇ mol/rat) in male rats.
  • AUC 24h of DHEA induced by these compounds is reported.
  • FIG. 13 shows the plasma concentration of androst-5-ene-3 ⁇ ,17 ⁇ -diol (ng/mL) (Y axis) in function of time (X-axis) after a single oral absorption of sex steroid precursor of the invention(150 ⁇ mol/rat) in male rats.
  • X-axis the plasma concentration of androst-5-ene-3 ⁇ ,17 ⁇ -diol (ng/mL)
  • X-axis in function of time
  • Estrogens are well-known to stimulate the proliferation of breast epithelial cells and cell proliferation itself is thought to increase the risk of cancer by accumulating random genetic errors that may result in neoplasia (Preston Martin et al., Cancer. Res. 50: 7415-21, 1990). Based on this concept, antiestrogens have been introduced to prevent breast cancer with the objective of reducing the rate of cell division stimulated by estrogens.
  • a SERM of the present invention induces atrophy of the mammary gland which is characterized by a decrease in the size and number of the lobular structures, and no evidence of secretory activity, indicating the potent antiestrogenic activity of EM-800 in the mammary gland (Luo et al. Endocrinology 138: 4435-4444, 1997).
  • a sex steroid precursor of the present invention leads to an elevation in serum DHEA and 5-diol while serum 4-dione, testosterone, dihydrotestosterone, and estradiol levels are only moderately increased or more often remain unchanged, thus confirming the intracellular biotransformation of this precursor steroid in peripheral tissues (Labrie et al., Mol. Cell. Endocrinol. 78: C113-C118, 1991).
  • the stimulatory effect of orally administered DHEA on serum androgens, such as testosterone and dihydrotestosterone is of greater amplitude than the effect on serum estrogens, thus suggesting that DHEA is predominantly transformed into androgens in these animals.
  • Androgens have also been shown to inhibit the growth of DMBA-induced n ammary carcinoma in the rat, this inhibition being reversed by the simultaneous aoministration of the pure antiandrogen Hutamide (Dauvois et al., Breast Cancer Res. Treat. 14: 299-306, 1989). Taken together, the present data indicate the involvement of the androgen receptor in the inhibitory action of DHEA on breast cancer.
  • the present invention shows that the combination of a SERM (EM- 800) and a sex steroid precursor (DHEA) exerts more potent inhibitory effects than each compound used alone on the development of DMBA-induced rat mammary carcinoma as well illustrated in Figures 1 and 2. In fact, no DMBA-induced tumor was found at the end of the experiment in animals that had received both DHEA and EM-800.
  • EM- 800 SERM
  • DHEA sex steroid precursor
  • the present invention describes that the combination of a sex steroid precursor (DHEA) and a SERM (EM-800) maintained the stimulatory effect of DHEA on bone formation and potentiated the inhibitor ⁇ ' effect of the SERM (EM-800) alone on bone turnover and resorption as demonstrated by the further decreases in urinary hydroxyproline and calcium excretion when both compounds were combined.
  • DHEA sex steroid precursor
  • SERM EM-800
  • BMD bone mineral density
  • reduced bone mineral density is not the only abnormality associated with reduced bone strength. (Guidelines for preclinical and clinical evaluation of agents used in the prevention or treatment of postmenopausal osteoporosis, Division of Metabolism and Endocrine Drug Products, FDA, May 1994). It is thus important to analyze the changes in biochemical parameters of bone metabolism induced by various compounds and treatments in order to gain a better knowledge of their action.
  • DHEA did not affect the urinary hydroxyprolme/CTeatinine ratio, a marker of bone resorption. Moreover, no effect of DHEA could be detected on daily urinary calcium or phosphorus excretion (Luo et al., Endocrinology 138: 4435-4444, 1997).
  • EM-800 decreased the urinary hyciroxyprolme/CTeatinine ratio by 48% while, similarly to DHEA, no effect of EM-800 was seen on urinary calcium or phosphorus excretion.
  • EM- 800 moreover, had no effect on serum alkaline phosphatase activity, a marker of bone formation while DHEA increased the value of the parameter by about 75% (Luo et al., Endocrinology 138: 4435-4444, 1997).
  • DHEA and EM-800 relates to the urinary hyo roxyprolme/CTeatinine ratio, a marker of bone resorption, which was reduced by 69% when both DHEA and EM-800 were combined, this value being statistically different (p ⁇ 0.01) from the 48% inhibition achieved by EM-800 alone while DHEA alone did not show any effect.
  • the addition of DHEA to EM-800 increases by 50% of the inhibitory effect of EM-800 on bone reabsorption.
  • DHEA can provide the beneficial effects which are lacking with the use of a selective estrogen receptor modulator (SERM) alone such as EM-800, Raloxifene, etc. While a SERM has effects limited to inhibition of bone resorption, the addition of DHEA, 5-diol, DHEA-S is believed to stimulate bone formation (an effect not found with a SERM or an estrogen) and further reduce bone resorption above the effect achieved with EM-800.
  • SERM selective estrogen receptor modulator
  • trabecular bone volume of the tibia increased from 4.1 ⁇ 0.7% in ovariectomized rats to 11.9 ⁇ 0.6% (p ⁇ 0.01) with DHEA alone while the addition of EM-800 to DHEA further increased trabecular bone volume to 14.7 ⁇ 1.4%, a value similar to that found in intact controls (Fig. 6)
  • figure 8 illustrates the increase in trabecular bone volume in the proximal tibia metaphysis induced by DHEA in ovariectomized treated animals (C) compared to ovariectomized controls (B), as well as the partial inhibition of the stimulatory effect of DHEA after the addition of Hutamide to DHEA treatment (D).
  • D Hutamide to DHEA treatment
  • administration of DHEA in combination with EM-800 resulted in a complete prevention of the ovariectomy-induced osteopenia (E), the trabecular bone volume being comparable to that seen in intact controls (A).
  • the bone loss observed at menopause in women is believed to be related to an increase in the rate of bone resorption which is not fully compensated by the secondary increase in bone formation.
  • the parameters of both bone formation and bone resorption are increased in osteoporosis and both bone resorption and formation are inhibited by estrogen replacement therapy.
  • the inhibitory effect of estrogen replacement on bone formation is thus believed to result from a coupled mechanism between bone resorption and bone formation, such that the primary estrogen-induced reduction in bone resorption entrains a reduction in bone formation (Parfitt, Calcified Tissue International 36 Suppl. 1: S37-S45, 1984).
  • Cancellous bone strength and subsequent resistance to fracture do not only depend upon the total amount of cancellous bone but also on the trabecular microstructure, as determined by the number, size, and distribution of the trabeculae.
  • the loss of ovarian function in postmenopausal women is accompanied by a significant decrease in total trabecular bone volume (Melsen et al., Acta Pathologica & Microbiologica Scandinavia 86: 70-81, 1978; Vakamatsou et al., Calcified Tissue International 37: 594-597, 1985), mainly _____,__,
  • DHEA androgenic stimulator ⁇ ' effect of DHEA was observed on almost all the bone histomorphometric parameters studied. DHEA thus resulted in a significant increase in trabecular bone volume as well as trabecular number, while it decreased the intertrabecular area.
  • the invention contemplates pharmaceutical compositions which include both the SERM or the bisphosphonate compound and the sex steroid precursor (DHEA , DHEAS, 5-diol) in a single composition for simultaneous administration.
  • the composition may be suitable for administration in any traditional manner including but not limited to oral administration, subcutaneous injection, intramuscular injection or percutaneous adrninistration.
  • a kit is provided wherein the kit includes one or more SERM or bisphosphonate and sex steroid precursors in separate or in one container.
  • the kit may include appropriate materials for oral adrninistration, e.g. tablets, capsules, svrups and the like and for transdermal administration, e.g., ointments, lotions, gels, creams, sustained release patches and the like.
  • SERMs and sex steroid precursors have utility in the treatment and/ or prevention of the development of osteoporosis, breast cancer, hypercholesterolemia, hyperlipidemia or atherosclerosis.
  • the active ingredients of the invention may be formulated and adrninistered in a variety of manner.
  • Active ingredient for transdermal or transmucosal is preferably present at from 0.5% to 20% by weight relative to the total weight of the pharmaceutical composition more preferably between 2 and 10%.
  • DHEA or 5-diol should be at a concentration of at least 7% for percutaneous administration.
  • the active ingredient may be placed into a transdermal patch having structures known in the art, for example, structures such as those set forth in E.P. Patent No.0279982.
  • the active compound When formulated as an ointment, lotion, gel or cream or the like, the active compound is admixed with a suitable carrier which is compatible with human skin or mucosa and which enhances transdermal penetration of the compound through the skin or mucosa.
  • suitable carriers are known in the art and include but are not limited to Klucel HF and Glaxal base. Some are commercially available, e.g., Glaxal base available from Glaxal Canada Limited Company. Other suitable vehicles can be found in Koller and Buri, S.T.P. Pharma 3(2), 115-124, 1987.
  • the carrier is preferably one in which the active ingredient(s) is (are) soluble at ambient temperature at the concentration of active ingredient that is used.
  • the carrier should have sufficient viscosity to maintain the inhibitor on a localized area of skin or mucosa to which the composition has been applied, without running or evaporating for a time period sufficient to permit substantial penetration of the precursor through the localized area of skin or mucosa and into the bloodstream where it will cause a desirable clinical effect.
  • the carrier is typically a mixture of several components, e.g. pharmaceutically acceptable solvents and a thickening agent.
  • a mixture of organic and inorganic solvents can aid hydrophylic and lipophylic solubility, e.g. water and an alcohol such as ethanol.
  • Preferred sex steroid precursors are dehydroepiandrosterone (DHEA) (available from Diosynth Inc., Chicago, Illinois, USA), its prodrugs (available from Steraloids, Wilton, New Hampshire, USA), 5-androsten-3 ⁇ ,17 ⁇ -diol and its prodrugs EM-1304 and EM-01474-D (available from Steraloids, Wilton, New Hampshire USA).
  • DHEA dehydroepiandrosterone
  • EM-1304 and EM-01474-D available from Steraloids, Wilton, New Hampshire USA.
  • the sex steroid precursor is formulated as an alcoholic gel containing 2.0 to 10% of caprylic-capric triglyceride (Neobee M-5); 10 to 20% of hexylene glycol; 2.0 to 10% of diethyleneglycol monomethyl ether (Transutol); 2.0 to 10% of Cyclomethicone (Dow Corning 345); 1.0 to 2% of benzyl alcohol and 1.0 to 5.0% of hydroxypropylcellulose (Klucel HF).
  • the carrier may also include various additives commonly used in ointments and lotions and well known in the cosmetic and medical arts.
  • various additives commonly used in ointments and lotions and well known in the cosmetic and medical arts.
  • fragrances, antioxidants, perfumes, gelling agents, thickening agents such as carboxymethylcellulose, surfactants, stabilizers, emollients, coloring agents and other similar agents may be present.
  • the site of application on the skin should be changed in order to avoid excess local concentration of active ingredient and possible overstimulation of the skin and sebaceous glands by androgenic metabolites of sex steroid precursor.
  • DHEA or other precursor is preferably present in a concentration between 5 and 98% by weight relative to total weight of the composition more preferably between 50 and 98 percent, especially between 80 and 98 percent.
  • a single precursor such as DHEA may be the only active ingredient, or alternatively, a plurality of precursors and/ or their analogues may be used (e.g., a combination of DHEA, DHEA-S, 5-diol, or a combination of two or more compounds converted in vivo to DHEA, DHEA-S or 5-diol or a combination of DHEA or 5-diol and one or more analogues thereof which are converted to DHEA or 5-diol in vivo, etc.
  • the blood level of DHEA is the final criteria of adequate dosage which takes into account individual variation in absorption and metabolism.
  • the attending clinician will, especially at the beginning of treatment, monitor an individual patient's overall response and serum levels of DHEA (in comparison to the preferred serum concentrations discussed above), and monitor the patient's overall response to treatment, adjusting dosages as necessary where a given patients' metabolism or reaction to treatment is atypical.
  • Treatment in accordance with the invention is suitable for indefinite continuation. It is expected that DHEA and/ or 5-diol treatment will simply maintain DHEA levels within a range similar to that which occurs naturally in women before menopause (serum concentration between 4 and 10 micrograms per liter), or naturally in young adult men (serum concentration between 4 and 10 micrograms per liter).
  • the SERM compound or bisphosphonate and/ or the sex steroid precursor can also be adrninistered, by the oral route, and may be formulated with conventional pharmaceutical excipients, e.g. spray dried lactose, microcrystalline cellulose, and magnesium stearate into tablets or capsules for oral administration.
  • conventional pharmaceutical excipients e.g. spray dried lactose, microcrystalline cellulose, and magnesium stearate into tablets or capsules for oral administration.
  • the active substance can be worked into tablets or dragee cores by being mixed with solid, pulverulent carrier substances, such as sodium citrate, calcium carbonate or dicalcium phosphate, and binders such as polyvinyl pyrrolidone, gelatin or cellulose derivatives, possibly by adding also lubricants such as magnesium stearate, sodium lauryl sulfate, "Carbowax" or polyethylene glycol.
  • solid, pulverulent carrier substances such as sodium citrate, calcium carbonate or dicalcium phosphate
  • binders such as polyvinyl pyrrolidone, gelatin or cellulose derivatives
  • lubricants such as magnesium stearate, sodium lauryl sulfate, "Carbowax” or polyethylene glycol.
  • taste-improving substances can be added in the case of oral adrninistration forms.
  • plug capsules e.g. of hard gelatin, as well as closed solf- gelatin capsules comprising a softner or plasticizer, e.g. glycerine.
  • the plug capsules contain the active substance preferably in the form of granulate, e.g. in mixture with fillers, such as lactose, saccharose, mannitol, starches, such as potato starch or amylopectin, cellulose derivatives or highly dispersed silicic acids.
  • the active substance is preferably dissolved or suspended in suitable liquids, such as vegetable oils or liquid polyethylene glycols.
  • the lotion, ointment, gel or cream should be thoroughly rubbed into the skin so that no excess is plainly visible, and the skin should not be washed in that region until most of the transdermal penetration has occurred preferably at least 4 hours and, more preferably, at least 6 hours.
  • a transdermal patch may be used to deliver precursor in accordance with known techniques. It is typically applied for a much longer period, e.g., 1 to 4 days, but typically contacts active ingredient to a smaller surface area, allowing a slow and constant delivery of active ingredient.
  • transdermal drug delivery systems that have been developed, and are in use, are suitable for delivering the active ingredient of the present invention.
  • the rate of release is typically controlled by a matrix diffusion, or by passage of the active ingredient through a controlling membrane.
  • transdermal devices are well known in the rat, and are explained, for example, in United States Patents 5,162,037, 5,154,922, 5,135,480, 4,666,441, 4,624,665, 3,742,951, 3,797,444, 4,568,343, 5,064,654, 5,071,644, 5,071,657, the disclosures of which are incorporated herein by reference. Additional background is provided by European Patent 0279982 and British Patent Application 2185187.
  • the device may be any of the general types known in the art. including adhesive matrix and reservoir- type transdermal delivery devices.
  • the device may include drug-containing matrixes incorporating fibers which absorb the active ingredient and/ or carrier.
  • the reservoir may be defined by a polymer membrane impermeable to the carrier and to the active ingredient.
  • a transdermal device In a transdermal device, the device itself maintains active ingredient in contact with the desired localized skin surface. In such a device, the viscosity of the carrier for active ingredient is of less concern than with a cream or gel.
  • a solvent system for a transdermal device may include, for example, oleic acid, linear alcohol lactate and dipropylene glycol, or other solvent systems known in the art. The active ingredient may be dissolved or suspended in the carrier.
  • a transdermal patch may be mounted on a surgical adhesive tape having a hole punched in the middle.
  • the adhesive is preferably covered by a release liner to protect it prior to use.
  • Typical material suitable for release includes polyethylene and polyethylene-coated paper, and preferably silicone-coated for ease of removal.
  • the release liner is simply peeled away and the adhesive attached to the patient's skin.
  • Bannon et al. describe an alternative device having a non-adhesive means for securing the device to the skin.
  • the percutaneous or transmucosal delivery system of the invention may also be used as a novel and improved delivery system for the prevention and/ or treatment of osteoporosis or other diseases which respond favorably to treatment with androgens and/ or estrogens.
  • a selective estrogen receptor modulator of the invention has a molecular formula with the following features: a) two aromatic rings spaced by 1 to 2 intervening carbon atoms, both aromatic rings being either unsubstituted or substituted by a hydroxyl group or a group converted in vivo to hydroxyl; and b) a side chain possessing an aromatic ring and a tertiary arnine function or salt thereof.
  • EM-800 reported in PCT/ CA96/ 00097 (WO 96/26201)
  • the molecular structure of EM-800 is:
  • SERM of the invention is EM-01538 :
  • EM-1538 (also called EM-652.HCL) is the hydrochloride salt of the potent antiestrogen EM-652 compared to EM-800, EM-1538 is a simpler and easier salt to synthesize. It was also easy to isolate, purify, crystallizable, and displayed good solid state stability. In administering either EM-800 or EM-1538, it is believed to result in the same active compound in vivo.
  • SERMs of the invention include Tamoxifen ((Z)-2-[4-(l,2-diphenyl-l- butenyl)]-N,N-dimethylethanamine) (available from Zeneca, UK), Toremifene (available from Orion-Farmos Pharmaceuticla, Finland, or Schering-Plough), Droloxifene and CP- 336,156 (cis-lR-[4'-pyrroUdino-ethoxyphenyl]-2S-phenyl-6-hydroxy-l,2,3,4,- tetrahydronapthalene D-(-)-tartrate salt) (Pfizer Inc., USA), Raloxifene (Eh Lilly and Co., USA), LY 335563 and LY 353381 (Hi Lilly and Co., USA), Iodoxifene (SrmthKline Beecham, USA), Levormeloxifene (3,4-tians-2,2-dimethyl-3-phenyl ⁇
  • SERM used as required for efficacy, as recommended by the manufacturer, can be used. Appropriate dosages are known in the art. Any other non steroidal antiestrogen commercially available can be used according to the invention. Any compound having activity similar to SERMs (example: Raloxifene can be used).
  • SERMs aciministered in accordance with the invention are preferably aciministered in a dosage range between 0.01 to 10 mg/kg of body weight per day (preferably 0.05 to 1.0 mg/kg), with 5 mg per day, especially 10 mg per day, in two equally divided doses being preferred for a person of average body weight when orally administered, or in a dosage range between 0.003 to 3.0 mg/kg of body weight per day (preferably 0.015 to 0.3 mg/ml), with 1.5 mg per day, especially 3.0 mg per day, in two equally divided doses being preferred for a person of average body weight when parentally administered (i.e. intramuscular, subcutaneous or percutaneous aclministration).
  • the SERMs are administered together with a pharmaceutically acceptable diluent or carrier as described below.
  • Preferred bisphosphonates of the invention include Alendronate [(4-amino-l- hydroxybutylidene)bis phosphonic acid, disodium salt, hydrate] available from Merck Shape and Dohme under the Tradename of Fosamax, Etidronate [(1- hvdroxyethylidene)bis phosphonic acid, 2,2'-iminobis ethanol ] available from Procter and Gamble under the Trade names of Didrocal and Didronel , Qodronate [(dichloromethylene)bis phosphonic acid, disodium salt] available from Rh ⁇ ne-Poulenc Rorer under the Trade name of Bonefos or available from Boehringer Mannheim under the Trade name of Ostac and, Pamidronate (3-amino-l-hydroxypropylidene)bis phosphonic acid, disodium salt) available from Geigy under the Tradename of Aredia.
  • risedronate (1- hvdroxy-2-(3-pyridinyl)ethylidene bisphosphonic acid monosodium salt) is under clinical development. Any other bisphosphonates commercially available can be used according to the invention, all at the manufacturers' recommended dosage. Likewise sex steroid precursors may be utilized at dosages recommended in the prior art, preferably at dosages that restore circulating levels to those of healthy males 20-30 years of age or those of premenopausal adult females.
  • mice Female Sprague-Dawley rats [Crl:CD(SD)Br] were obtained at 44-46 days of age from Charles River Canada Inc. (St. Constant, Quebec) and housed 2 per cage in a light (12h light/ day; lights on at 07:15h)- and temperature (22 ⁇ 2°C)-controlled environment. Animals received Purina rodent chow and tap water ad libitum. The animal studies were conducted in a Canadian Council on Animal Care (CCAC)-approved facihty in agreement with the CCAC Guide for Care and Use of Experimental Animals.
  • CCAC Canadian Council on Animal Care
  • Mammary carcinomas were induced by a single intragastric administration of 20 mg of
  • DMBA Sigma Chemical Co., St. Louis, MO
  • the animals were randomly divided into groups each containing 20 rats with the exception of 40 artimals in the control group.
  • the animals were treated for 282 days with the following (1) control vehicles, for both DHEA and EM-800; (2) EM-800 ((+)-7-pivaloyloxy- 3-(4'-pivaloyloxyphenyl)-4-memyl-2-(4 -(2"'-piperidmoemoxy)phenyl)-2H-benzopyran) (75 ⁇ g, orally, once daily) in 0.5 ml of a 4% ethanol, 4% polyethylene glycol-600, 1% gelatin, 0.9% Nad suspension; (3) DHEA (10 mg, percutaneously, once daily) in 0.5 ml of 50% ethanol, 50% propylene glycol; and (4) both EM-800 and DHEA. Treatment was initiated 3 davs before the oral administration of DMBA. EM-800 was svnthesized in the Medicinal Chemistry Division of our laboratory while D
  • Manv of the control animals and some of EM-800- or DHEA-treated animals were sacrificed by cervical dislocation under isoflurane-induced anesthesia 6 months after DMBA adrninistration because of the too large size of tumors.
  • the values of tumor size and number of these rats at sacrifice, together with those measured at later time intervals from the surviving animals, were used for the later analysis of the incidence of tumors, average tumor number per tumor-bearing rat and average tumor size per tumor-bearing animal.
  • the remaining animals (9 rats from control and 13-19 rats from each other group) continued to receive treatment for another 3-month period in order to observe long-term preventive potency of DHEA and EM-800 alone or in combination.
  • Rats were sacrificed 279 days after DMBA adrninistration. The uteri, vaginas, and ovaries were immediately removed, freed from connective and adipose tissue, and weighed.
  • Rats were anesthetized with an i.p. injection of ketarnine hydrochloride and diazepam at doses of 50 and 4 mg/kg B.W., respectively.
  • the whole skeleton and the right femur were scanned using dual energy X-ray absorptiometry (DEXA; QDR 2000-7.10C, Hologic, Waltham, MA) equipped with a Regional High Resolution software.
  • the scan field sizes were 28.110 x 17.805 cm and 5.0 x 1.902 cm, the resolutions were 0.1511 x 0.0761 cm and 0.0254 x 0.0127 cm, while the scan speeds were 0.3608 and 0.0956 mm/ sec for total skeleton and femur, respectively.
  • Both bone mineral content (BMC) and bone mineral density (BMD) of total skeleton, lumbar spine, and femur were measured on the scan images of total skeleton and femur.
  • Treatment with DHEA or EM-800 decreased average tumor number per tumor-bearing animal from 4.7 ⁇ 0.5 tumors in control animals to 3.4 ⁇ 0.7 (N.S.) and 1.4 ⁇ 0.3 (p ⁇ 0.01) tumors/ animal, respectively, while no tumor was found at the end of the experiment in the animals who received both drugs (p ⁇ 0.01 versus the three other groups) (Fig. 2A).
  • One of the two tumors which later disappeared was present from day 79 to day 201 following DMBA administration while the other tumor was palpable from day 176 to day 257. It can be seen in Fig.
  • DHEA steroid dehydroepiandrosterone
  • mice received daily subcutaneous injections of 0.5 ⁇ g estrone (an estrogenic hormone) immediately after ovariectomy.
  • EM-800 (15, 50 or 100 ⁇ g) was given orally once daily.
  • DHEA was applied twice daily (total dose 0.3, 1.0 or 3.0 mg) to the dorsal skin either alone or in combination with a 15 ⁇ g daily oral dose of EM-800. Changes in tumor size in response to the treatments were assessed periodically in relation to the measurements made on the first day. At the end of the experiments, tumors were dissected and weighed.
  • DHEA and EM-800 independently suppressed the growth of estrone-stimulated ZR-75-1 mouse xenograft tumors in nude mice.
  • Administration of DHEA at the defined doses does not alter the inhibitory effect of EM-800.
  • ZR-75-1 human breast cancer cells were obtained from the American Type Culture Collection (Rockville, MD) and routinely cultured as monolayers in RPMI 1640 medium supplemented with 2 mM L-glutarnine, 1 mM sodium pyruvate, 100 IU penicillin/ ml, 100 ⁇ g streptomycin/ ml, and 10% fetal bovine serum, under a humidified atmosphere of 95% air/ 5% C ⁇ 2 at 37°C as described (Poulin and Labrie, Cancer Res. 46: 4933-4937, 1986; Poulin et al., Breast Cancer Res. Treat. 12: 213-225, 1988). Cells were passaged weekly after treatment with 0.05% trypsin:0.02% EDTA (w/v). The cell cultures used for the experiments described in this report were derived from passage 93 of the cell line ZR-75-1.
  • mice Female homozygous Harlan Sprague-Dawley (nu/nu) athymic mice (28- to 42-day-old) were obtained from HSD (Indianapolis, Indiana, USA). Mice were housed in vinyl cages with air filter tops in laminar air flow hoods and maintained under pathogen-limited conditions. Cages, bedding, and food were autoclaved before use. Water was autoclaved, acidified to pH 2.8, and provided ad libitum.
  • mice were bilaterally ovariectomized (OVX) one week before tumor cell inoculation under anesthesia achieved by intraperitoneal injection of 0.25 ml/ animal of Avertin (amylic alcohol: 0.8 g/100 ml 0.9% NaCl; and tribromo ethanol: 2g/100 ml 0.9% Nad).
  • OVX ovariectomized
  • All animals except those in the control OVX group, received daily subcutaneous injections of 0.5 ⁇ g estrone (Ei) in 0.2 ml of 0.9% NaC1 5% ethanol 1% gelatin.
  • DHEA was administered percutaneously twice daily at the doses of 0.3, 1.0 or 3.0 mg/ animal applied in a volume of 0.02 ml on the dorsal skin area outside the area of tumor growth.
  • DHEA was dissolved in 50% ethanol 50% propylene glycol.
  • EM-800 ((+)-7- pivaloyloxy-3-(4 l -pivaloyloxyphenyl)-4-meth ⁇ -2-(4 l '-(2'''-piperidinoethoxy)phenyl)-2H- benzopyran), was synthesized as described earlier (Gauthier et al., J. Med. Chem. 40: 2117- 2122, 1997) in the medicinal chemistry division of the Laboratory of Molecular Endocrinology of the CHUL Research Center. EM-800 was dissolved in 4% (v/v) ethanol 4% (v/v) polyethylene glycol (PEG) 600 1% (w/v) gelatin 0.9% (w/v) NaCl.
  • PEG polyethylene glycol
  • Statistical significance of the effects of treatments on tumor size was assessed using an analysis of variance (ANOVA) evaluating the effects due to DHEA, EM-800, and time, and repeated measures in the same animals performed at the initiation and at the end of the treatment (subjects within group factor).
  • the repeated measures at time 0 and after 9.5 months of treatment constitute randomized blocks of animals. The time is thus analyzed as a within-block effect while both treatments are assessed as between-block effects. All interactions between main effects were included in the model.
  • the significance of the treatment factors and of their interactions was analyzed using the subjects within group as the error term. Data were log-transformed.
  • the hypotheses underlying the ANOVA assumed the normality of the residuals and the homogeneity of variance.
  • a posteriori pairwise comparisons were performed using Fisher's test for least significant difference. Main effects and the interaction of treatments on body weight and organ weight were analyzed using a standard two-way ANOVA with interactions. All ANOVAs were performed using SAS program (SAS Institute, Gary, NC, USA). Significance of differences were declared using a 2-tailed test with an overall level of 5%. Categorical data were analyzed with a Kruskall-Wallis test for ordered categorical response variables (complete response, partial response, stable response, and progression of tumor). After overall assessment of a treatment effects, subsets of the results presented in Table 4 were analyzed adjusting the critical p-value for multiple comparisons. The exact p-values were calculated using StatXact program (Cytel, Cambridge, MA, USA).
  • human ZR-75-1 tumors increased by 9.4-fold over 291 days (9.5 months) in ovariectomized nude mice treated with a daily 0.5 ⁇ g subcutaneously administered dose of estrone while in control OVX mice who received the vehicle alone, tumor size was decreased to 36.9% of the initial value during the course of the study.
  • the tumor size reductions achieved with the three EM-800 doses are not significantly different between each other. As illustrated in Fig.
  • tumor weight at the end of the 9.5- month study was decreased from 1.12 ⁇ 0.26 g in control Ei -supplemented OVX mice to 0.08 ⁇ 0.03 g, 0.03 ⁇ 0.01 g and 0.04 ⁇ 0.03 g in animals treated with the daily 15 ⁇ g, 50 ⁇ g, and 100 ⁇ g doses of EM-800, respectively (P ⁇ .0001 at all doses of EM-800 vs Ei supplemented OVX).
  • the antiestrogen EM-800 at the daily oral dose of 15 ⁇ g, caused a 87.5% inhibition of estrone-stimulated tumor growth measured at 9.5 months.
  • the addition of DHEA at the three doses used had no significant effect on the already marked inhibition of tumor size achieved with the 15 ⁇ g daily dose of the antiestrogen EM-800 (Fig. 5B).
  • Stable responses were measured at 12.5%, 21.4%, 20.0%, and 13.3% in the control Ei-supplemented mice and in the three groups of animals who received the above-indicated doses of DHEA, respectively.
  • the rates of complete, partial and stable responses were measured at 68.8%, 6.2%, and 18.8%, respectively, while progression was seen in only 6.2% of tumors (Table 4).
  • vaginal weight was then reduced to 23 ⁇ 1 mg, 15 ⁇ 1 mg, and 11 ⁇ 1 mg following treatment with the daily 15 ⁇ g, 50 ⁇ g or 100 ⁇ g doses of EM-800, respectively (overall p and pairwise P ⁇ .0001 at all doses vs control).
  • vaginal weight was measured at 22 ⁇ 1 mg, 25 r 2 mg and 23 ⁇ 1 mg, respectively (N.S.
  • EM-800 decreased uterine weight in estrone-supplemented OVX animals to a value not different from that of OVX controls while vaginal weight was reduced to a value below that measured in OVX controls (P ⁇ .05).
  • DHEA probably due to its androgenic effects, partially counteracted the effect of EM-800 on uterine and vaginal weight.
  • Group 12 OVX + Raloxifene (EM-1105) (0.01 mg/kg, po, ID)
  • Group 13 OVX + Raloxifene (EM-1105) (0.03 mg/kg, po, ID)
  • Group 14 OVX + Raloxifene (EM-1105) (0.1 mg/kg, po, ID)
  • Group 15 OVX + Raloxifene (EM-1105) (0.3 mg/kg, po, ID)
  • Androstene-3 ⁇ ,17 ⁇ -diol possesses intrinsic estrogenic activity.
  • it can be transformed into active androgens and/ or other estrogens in peripheral intracrine tissues.
  • 5- diol alone or in combination with the antiandrogen Flutamide (FLU, 10 mg, s.c, once daily), and/or the antiestrogen EM-800 (100 ⁇ g, s.c, once daily) for 12 months.
  • FLU antiandrogen Flutamide
  • EM-800 100 ⁇ g, s.c, once daily
  • Bone mineral density (BMD) was measured after 11 months of treatment. Ovariectomy (OVX) led to a 12.8% decrease in femoral BMD (pO.Ol) while treatment with the highest dose of 5-diol restored 34.3% of femoral BMD lost during the 11 months following OVX (p ⁇ 0.01). Simultaneous ad ⁇ nistration of FLU completely prevented the stimulatory effect of 5-diol on femoral BMD while the addition of EM-800 resulted in an additional 28.4% stimulation compared to the effect of 5-diol alone.
  • the histomorphometric analysis shows that the stimulatory effects of 5-diol on bone volume, trabecular number and the inhibitory effect on trabecular separation of secondary spongiosa of the proximal tibia metaphyseal area are abolished by FLU, but further enhanced by EM-800.
  • the marked stimulation of serum alkaline phosphatase activity obtained following the treatment with 5-diol is 57% (p ⁇ 0.01 vs 12.5 mg 5-diol alone) reversed by the simultaneous administration of FLU.
  • Treatment with 5- diol had no statistically significant inhibitory effect on the urinary ratio of calcium to creatinine.
  • the highest dose of 5-diol caused a significant 23% (p ⁇ 0.01) reduction of serum cholesterol while the addition of EM-800 decreased serum cholesterol by 62% (p ⁇ 0.01).
  • the present data clearly show the stimulatory effect of 5-diol on bone formation and suggest that although 5-diol is a weak estrogen, its stimulatory effect on bone formation is predominantly mediated by an androgenic effect.
  • the additive stimulatory effects of EM-800 and 5-diol on bone mass demonstrate the bone-sparing effect of the antiestrogen EM-800 in the rat.
  • the cholesterol-lowering activity of both 5-diol and EM-800 could have interesting utility for the prevention of cardiovascular diseases.
  • LD Limit of Detection : 0.01 ng/ml * p ⁇ 0.05; ** ⁇ 0.01 versus OVX Control
  • Stev A BF 3 -Et 2 0 , toluene; 100 °C ; 1 hour.
  • Stev C 3,4-dihydropyran, p-toluenesulfonic acid monohvdrate, ethyl acetate; 25 °C under nitrogen, 16 hours, and then crystallization in isopropanol.
  • Steps G, H (lS)-(+)-10-camphorsulfonic acid, acetone, water, toluene, room temperature, 48 hours.
  • Stey HH 95% ethanol, 70 °C, then room temperature 3 days.
  • Stev HHR Recycling of mother liquor and wash of step HH (S)-lO-camphorsulfonic acid, reflux ; 36 hours, then room temperature for 16 hours.
  • the reaction mixture was stirred under nitrogen with no external heating for about 16 hours.
  • the mixture was then washed with a solution of sodium bicarbonate (1 g) and sodium chloride (5 g) in water (100 ml).
  • the phases were separated and the organic phase was washed with brine (20 ml). Each wash was back extracted with 50 ml ethyl acetate. All the organic phases were combined and filtered through sodium sulfate.
  • Solvent (about 600 ml) was removed by distillation at atmospheric pressure and isopropanol (250 ml) was added. Additional solvent (about 300 ml) was distilled at atmospheric pressure and isopropanol (250 ml) was added. Additional solvent (about 275 ml) was distilled at atmospheric pressure and isopropanol (250 ml) was added. The solution was cooled at about 25°C with stirring and after about 12 hours, the crystalline solid was filtered, washed with isopropanol and dried (116.5 g, 70%).
  • Dimethylfoimamide (6.5 L) and l,8-diazabicyclo[5,4,0]undec-7-ene (110.5 g, 0.726 mole) were added.
  • the solution was agitated for about 8 hours at room temperature to isomerize the chalcone 8 to chromanone 9 and then added to a mixture of water and ice (8 L) and toluene (4 L).
  • the phases were separated and the toluene layer washed with water (5 L).
  • the combined aqueous washes were extracted with toluene (3 x 4 L).
  • the combined toluene extracts were finally washed with brine (3 x 4 L), concentrated at atmospheric pressure to 5.5 L and then cooled to -10°C.
  • the assays of the bioavailability of prodrugs of sex steroid precursors were performed in male Sprague Dawley rats by measuring the plasma concentrations of the compounds after single oral adrninistration of the compounds.
  • Rats Male Sprague-Dawley rats [Crl:CD(SD)Br] weighing 275-350 g were obtained from Charles-River Canada Inc. and housed 2 per cage during the acclimation period and individually during the study period. The animals were maintained under a regimen of 12 hours light: 12 hours dark (lights on at 08:00). Animals received certified Rodent feed (Lab Diet # 5002, pellets) and tap water ad libitum. Rats were fasted (access to water only) starting on the evening prior to dosing.
  • Each compound to be tested was aciministered to three animals as a suspension in 0.4% methylcellulose by oral gavage at a dose of 150 ⁇ mg/rat.
  • One blood sample of -0.7 ml was collected from the jugular vein of rats under Isoflurane-induced anesthesia at 1, 2, 3, 4, and 7 hours post-gavage. Blood samples were immediately transferred into a refrigerated 0.75 ml Microtainer containing EDTA and kept in an ice-water bath until cenrrifugation at 3000 rpm for 10 minutes. Plasma separation was performed rapidly (less than 50 minutes) after blood collection.
  • Plasma samples were kept at -80°C until measurement of plasma concentration of the sex steroid or sex steroid precursors by GC- MS. Results:
  • compositions utilizing preferred active SERM EM-800 or EM-1538 and preferred active a sex steroid precursor DHEA, EM-1304 or EM-01474-D
  • preferred active SERM EM-800 or EM-1538 and preferred active a sex steroid precursor DHEA, EM-1304 or EM-01474-D Other compounds of the invention or combination thereof, may be used in place of (or in addition to) EM-800 or EM-1538, DHEA, EM-1304 or EM-01474-D .
  • concentration of active ingredient may be varied over a wide range as discussed herein.
  • the amounts and tvpes of other ingredients that mav be included are well known in the art.
  • kits utilizing preferred active SERM EM-800 or EM-1538 and preferred active a sex steroid precursor DHEA, EM-1304 or EM-01474-D Other compounds of the invention or combination thereof, may be used in place of (or in addition to) EM-800 or EM-1538, DHEA, EM-1304 or EM-01474-D.
  • concentration of active ingredient may be varied over a wide range as discussed herein.
  • the amounts and types of other ingredients that may be included are well known in the art.
  • the SERM is orally adrninistered while the sex steroid precursor is percutaneously administered
  • Sex steroid precursor composition for topical adrninistration (gel)
  • the SERM and the sex steroid precursor are orally adrninistered
  • Non-Steroidal Antiestrogen composition for oral acLministration capsules
  • Sex steroid precursor composition for oral administration (Gelatin capsule)
  • SERMs may be substituted for EM-800 or EM-01538 in the above formulations, as well as other sex steroid inhibitors mav be substituted for DHEA, EM-1304 or EM-01474-D. More than one SERM or more than one precursor may be included in which case the combined weight percentage is preferably that of the weight percentage for the single precursor or single SERM given in the examples above.
PCT/CA1999/000538 1998-06-11 1999-06-10 Selective estrogen receptor modulator in combination with denydroepiandrosterone (dhea) or analogues WO1999063974A2 (en)

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DE69928104T DE69928104T2 (de) 1998-06-11 1999-06-10 Medizinische anwendung eines selektiven estrogenrezeptormodulators in kombination mit einer sexualsteroid-vorstufe
PL99379648A PL195772B1 (pl) 1998-06-11 1999-06-10 Zastosowanie prekursora sterydów płciowych w kombinacji z selektywnym modulatorem receptora estrogenu
IL14017899A IL140178A0 (en) 1998-06-11 1999-06-10 Selective estrogen receptor modulator in combination with a sex steroid precursor
KR1020007014056A KR100944261B1 (ko) 1998-06-11 1999-06-10 디하이드로에피안드로스테론(ｄｈｅａ) 또는 그 동족체와복합한 선택적인 에스트로겐 수용체 조절자
NZ508801A NZ508801A (en) 1998-06-11 1999-06-10 Selective estrogen receptor modulator in combination with dehydroepiandrosterone (DHEA) or analogues
AT99955419T ATE308326T1 (de) 1998-06-11 1999-06-10 Medizinische anwendung eines selektiven estrogenrezeptormodulators in kombination mit einer sexualsteroid-vorstufe
HU0103345A HU230495B1 (hu) 1998-06-11 1999-06-10 Szelektív ösztrogén receptor és nemi szteroid prekurzor kombinációját tartalmazó gyógyszerkészítmény
MXPA00012306A MXPA00012306A (es) 1998-06-11 1999-06-10 Usos medicos de un modulador de receptor de estrogeno selectivo en combinacion con precursores esteroides sexuales.
PL345887A PL199798B1 (pl) 1998-06-11 1999-06-10 Kompozycja farmaceutyczna zawierająca dehydroepiandrosteron, selektywny modulator receptora estrogenu i farmaceutycznie dopuszczalną zaróbkę
EP99955419A EP1083905B1 (en) 1998-06-11 1999-06-10 Medical use of a selective estrogen receptor modulator in combination with a sex steroide precursor
JP2000553043A JP2002517433A (ja) 1998-06-11 1999-06-10 選択的エストロゲン受容体モジュレーターと性ステロイド前駆体の組合せの医学的使用
AU42530/99A AU4253099A (en) 1998-06-11 1999-06-10 Selective estrogen receptor modulator in combination with denydroepiandrosterone (DHEA) or analogues
CA002334577A CA2334577C (en) 1998-06-11 1999-06-10 Medical uses of a selective estrogen receptor modulator in combination with sex steroid precursors
BR9911116-0A BR9911116A (pt) 1998-06-11 1999-06-10 Processo para tratar ou reduzir o risco de adquirir uma condição selecionada dentre o grupo consistindo de aterosclerose, câncer endometrial, câncer uterino, câncer ovariano, falta de lubrificação vaginal, e perda de massa muscular, composição farmacêutica, e, kit.
IL140178A IL140178A (en) 1998-06-11 2000-12-07 The use of a variety of selective estrogen receptors in combination with a sex steroid precursor for the preparation of a pharmaceutical preparation for the prevention or treatment of calcium loss from bone
NO20006254A NO331022B1 (no) 1998-06-11 2000-12-08 Selektiv ostrogenreseptormodulator i kombinasjon med dehydroepiandrosteron (DHEA) eller analoger
HK02101755.1A HK1040367B (zh) 1998-06-11 2002-03-07 與脫氫表雄酮或衍生物組合的選擇性雌激素受體調節劑
IL185087A IL185087A0 (en) 1998-06-11 2007-08-07 Selective estrogen receptor modulator in combination with a sex steroid precursor
NO20092730A NO332187B1 (no) 1998-06-11 2009-07-20 Ostrogenreseptormodulator EM-1538 og farmasoytisk preparat inneholdende denne

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