US20100256187A1 - Composition of 2,4,6- trifluoro-n-[6-(1-methyl-piperidin-4-carbonyl)-pyridin-2-yl]-benzamide - Google Patents

Composition of 2,4,6- trifluoro-n-[6-(1-methyl-piperidin-4-carbonyl)-pyridin-2-yl]-benzamide Download PDF

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US20100256187A1
US20100256187A1 US12/753,489 US75348910A US2010256187A1 US 20100256187 A1 US20100256187 A1 US 20100256187A1 US 75348910 A US75348910 A US 75348910A US 2010256187 A1 US2010256187 A1 US 2010256187A1
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compound
dose
pharmaceutically acceptable
pharmaceutical composition
trifluoro
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Alison Pilgrim
James F. White
Nadia M.J. Rupniak
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Colucid Pharmaceuticals Inc
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Colucid Pharmaceuticals Inc
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Priority to US12/753,489 priority Critical patent/US20100256187A1/en
Assigned to COLUCID PHARMACEUTICALS, INC. reassignment COLUCID PHARMACEUTICALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WHITE, JAMES F., PILGRIM, ALISON, RUPNIAK, NADIA M. J.
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Priority to US17/474,203 priority patent/US12257246B2/en
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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
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445—Non condensed piperidines, e.g. piperocaine
    • A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
    • A61K31/4545—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring hetero atom, e.g. pipamperone, anabasine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0031—Rectum, anus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/04—Centrally acting analgesics, e.g. opioids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/06—Antimigraine 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
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2121/00—Preparations for use in therapy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • Migraine is a common and highly disabling brain disorder, affecting over 10% of adults globally (Stovner L I et al., Cephalalgia 2007; 27:193-210).
  • the disease is typically characterized by attacks of 1-3 days of severe headache, associated with nausea, vomiting, photo- and phonophobia (migraine without aura), and, in one third of patients, neurological aura symptoms (migraine with aura) (Goadsby P J et al., N Engl J Med 2002; 346: 257-270).
  • the pathogenesis of migraine is incompletely understood.
  • vasodilatation was considered pivotal in causing the headache in migraine (Wolff s Headache and Other Head Pain.
  • triptans also carry the risk of causing coronary vasoconstriction (MaassenVanDenBrink A et al., Circulation 1998; 98: 25-30) and are contraindicated in patients with cardio- and cerebrovascular disease.
  • many patients using triptans report chest symptoms, which may mimic angina pectoris, causing anxiety and diagnostic confusion (Welch K M A et al., Cephalalgia 2000; 20: 687-95; Visser W H, et al., Cephalalgia 1996; 16: 554-559).
  • novel anti-migraine treatments that are devoid of vasoconstrictor activity are warranted.
  • LY334370 a neurally active selective 5-HT1F receptor agonist with no vasoconstrictor activity at clinically relevant concentrations, proved effective in the acute treatment of migraine in an early clinical proof-of-concept study (Goldstein D J et al., Lancet 2001; 358: 1230-4). Unfortunately, the clinical development of LY334370 had to be stopped because of compound-specific safety concerns on long term exposure in animals.
  • Compound I is a new selective and highly potent 5-HT 1F receptor agonist, with a Ki at human 5-HT1F receptors of 2.21 nM and an affinity which is more than 450-fold higher for 5-HT 1F receptors than for other 5-HT1 receptor subtypes (Nelson D L et al., Cephalalgia 2009: 29; 122).
  • the present invention relates to a pharmaceutical composition of 2,4,6-trifluoro-N-[6-(1-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide (Compound I):
  • the present invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable diluent or carrier, wherein for oral or rectal administration said composition comprises 50-400 mg per dose of Compound I or a pharmaceutically acceptable salt thereof and for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous or intramuscular administration said composition comprises up to 200 mg per dose of Compound I or a pharmaceutically acceptable salt thereof, further wherein said composition is administered one, two, or three times daily.
  • the present invention relates to a pharmaceutical composition, wherein said composition is for oral or rectal administration and the amount of Compound I or pharmaceutically acceptable salt thereof is from 50 mg to 400 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I is 50 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I is 100 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I is 200 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I is 400 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein said composition is for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration and the amount of Compound I or pharmaceutically acceptable salt thereof administered is up to 200 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I or a pharmaceutically acceptable salt thereof administered is 20 mg to 200 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I or a pharmaceutically acceptable salt thereof administered is from 20 to 60 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the amount of Compound I or a pharmaceutically acceptable salt thereof administered is from 20 to 30 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the administration is intravenous and the amount of Compound I or a pharmaceutically acceptable salt thereof administered is up to 200 mg per dose.
  • the present invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is intravenous over a period of about 20 minutes.
  • the present invention relates to a pharmaceutical composition, wherein the composition comprises the hemi-succinate salt of Compound I.
  • the present invention relates to a pharmaceutical composition, wherein the dose of Compound I or a pharmaceutically acceptable salt thereof is administered one time daily.
  • the present invention relates to a pharmaceutical composition, wherein the dose of Compound I or a pharmaceutically acceptable salt thereof is administered two times daily.
  • the present invention relates to a pharmaceutical composition, wherein the dose of Compound I or a pharmaceutically acceptable salt thereof is administered three times daily.
  • the present invention relates to a method for the treatment or prevention of migraine in a mammal in need thereof comprising administering to the mammal an effective amount of a pharmaceutical composition, wherein said composition comprises an amount of Compound I or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable diluent or carrier, further wherein for oral or rectal administration said composition comprises 50-400 mg per dose of Compound I or a pharmaceutically acceptable salt thereof and for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous or intramuscular administration said composition comprises up to 200 mg per dose of Compound I or a pharmaceutically acceptable salt thereof, and wherein said composition is administered one, two, or three times daily.
  • the present invention relates to a method comprising administering an amount of 20 mg of 2,4,6-trifluoro-N-[6-(1-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide hemisuccinate salt by intravenous administration over 20 minutes one time daily.
  • the present invention relates to a method, wherein said amount of 2,4,6-trifluoro-N-[6-(1-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide hemisuccinate salt is administered for the prevention of migraine.
  • the present invention relates to a method, wherein the mammal is a human.
  • FIG. 1 is a graph that shows the sequence of patient allocation to treatment groups for a study involving the administration of Compound I.
  • FIG. 2 is a graph that shows the dose escalation sequence of Compound I.
  • FIG. 3 is a bar graph that shows the proportion of patients with a headache response at 2 hours following administration of Compound I.
  • FIGS. 4A and 4B are two bar graphs that show migraine relief following iv administration of Compound I after 2 hours. In addition to headache relief at 2 hours, 30 mg iv over 20 minutes completely abolishes headache ('pain free') in a greater number of patients than placebo.
  • FIG. 5 is a graph that shows time course of response for Compound I administered by iv. 20 mg and 30 mg iv gave a rapid onset of headache relief.
  • FIGS. 6A and 6B are two bar graphs that show sustained pain response with Compound I administered by iv and rescue medication results. 30 mg iv reduced headache recurrence within 24 hours and reduced the use of rescue medication.
  • FIG. 7 is a graph that shows the percent of patients reporting moderate or severe disability after administration of Compound I following iv administration (20 min infusion).
  • FIG. 8 is a bar graph that shows global impressions of how patients were feeling 2 hours after intravenous administration of Compound I.
  • the 30 mg dose showed an increase in the number of patients who felt much better or very much better.
  • FIG. 9 is a series of graphs that show secondary endpoints following iv administration of Compound I at 10, 20, and 30 mg.
  • the 30 mg dose reduced associated symptoms of photophobia, phonophobia, and nausea.
  • FIG. 10 is a graph that shows plasma-concentration time profiles for the 50-400 mg oral solution doses of Compound I and the 30 mg iv infusion.
  • FIGS. 11A and 11B are two graphs that show dose linearity of Compound I.
  • FIG. 11A shows dose linearity of solution, AUC ⁇ (males).
  • FIG. 11B shows dose linearity of tablet, AUC ⁇ (males and females).
  • FIG. 12 is a graph that shows plasma-concentration time profiles for the 200 mg dose of Compound I given as an oral solution and as a tablet.
  • FIG. 13 is a graph that shows the mean Compound I plasma concentration profile following oral administration of 50 mg and 400 mg tablets, male and female.
  • FIG. 14 is a schematic representation of PK-PD model.
  • PK part is Central (Vc) and Periph. (Vp) (rectangles with vertical lines); hysteresis (delay) is Eff. Comp. (rectangle with horizontal lines); and PD part is Effect (headache scores) described by proportional odds model (oval).
  • FIG. 15 is a series of graphs that show cumulative probability to have a certain headache score versus time following administration of Compound I. Dots represent observed headache response; lines represent predictions by PK-PD model; shaded areas indicate prediction uncertainty, obtained from the uncertainty of the parameter estimates. Doses were administered intravenously.
  • FIG. 16 is a series of graphs that show examples of concentration time profiles after different oral doses of Compound I. Dots represent plasma concentrations; lines represent individual predictions by PK model; broken lines represent population predictions by PK model (prediction for typical subject in population). Doses were administered orally.
  • FIG. 17 is a graph that shows the percent pain relief at 30 minutes post dose of Compound I versus time to select an effective oral dose.
  • Line represents median prediction of percent pain relief by PK-PD model; shaded areas indicate prediction uncertainty, obtained from the uncertainty of the parameter estimates.
  • the present invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising 2,4,6-trifluoro-N-[6-(1-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide (Compound I):
  • the present invention also relates to a method for the treatment or prevention of migraine in a mammal in need thereof comprising administering to a mammal in need of such treatment or prevention an effective amount of a pharmaceutical composition described herein.
  • the present invention also relates to use of an amount of Compound I or a pharmaceutically acceptable salt thereof, for the preparation of a medicament for the treatment of migraine in a mammal.
  • the present invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable diluent or carrier, wherein for oral or rectal administration said composition comprises 50 to 400 mg per dose of Compound I or a pharmaceutically acceptable salt thereof and for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous or intramuscular administration said composition comprises up to 200 mg per dose of Compound I or a pharmaceutically acceptable salt thereof, further wherein said composition is administered one, two, or three times daily.
  • the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, ranging up to 1000 mg per dose administered once, two, or three times daily and a pharmaceutically acceptable diluent or carrier.
  • the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is from 50 mg to 500 mg per dose. In one aspect, the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is from 50 mg to 400 mg per dose. In one aspect, the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is 50 mg per dose. In one aspect, the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is 100 mg per dose.
  • the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is 200 mg per dose. In one aspect, the invention relates to a pharmaceutical composition for oral or rectal administration comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the amount is 400 mg per dose.
  • the invention relates to a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the administration is oral. In one aspect, the invention relates to a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the administration is oral administration of a tablet. In one aspect, the table comprises 50 to 400 mg of Compound I or a pharmaceutically acceptable salt thereof. In one aspect, the invention relates to a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the administration is oral administration of a solution. In one aspect, the solution comprises 25 to 400 mg of Compound I or a pharmaceutically acceptable salt thereof. In one aspect, the invention relates to a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt, wherein the administration is rectal.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, ranging up to 200 mg per dose administered once, two or three times daily and a pharmaceutically acceptable diluent or carrier.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is from 20 to 200 mg per dose.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is from 20 to 100 mg per dose.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is above 20 mg per dose.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is from 20 to 60 mg per dose.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is from 20 to 45 mg per dose.
  • the invention relates to a pharmaceutical composition for buccal, sublingual, nasal/intranasal, transdermal, subcutaneous, injectable, intravenous, or intramuscular administration comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is from 20 to 30 mg per dose.
  • the invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising an amount of Compound I or a pharmaceutically acceptable salt thereof, wherein the amount is about 10, 15, 20, 25, 30, 45 50, 60, 75, 90 or 100 mg per dose.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is intravenous.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is intravenous over time. In one aspect, the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is intravenous over a period of about 20 minutes. In one aspect, the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is intravenous over a period of 20 minutes.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is buccal. In one aspect, the invention relates to a pharmaceutical composition, wherein the administration is sublingual.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is nasal or intranasal.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is transdermal.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is subcutaneous.
  • the invention relates to a pharmaceutical composition, wherein the administration of Compound I or a pharmaceutically acceptable salt thereof is injectable.
  • the invention relates to a pharmaceutical composition, wherein the administration is intramuscular.
  • the invention relates to a pharmaceutical composition, wherein the composition comprises a pharmaceutically acceptable salt of Compound I. In one aspect, the invention relates to a pharmaceutical composition, wherein the composition comprises the hemi-succinate salt of Compound I. In one aspect, the invention relates to a pharmaceutical composition, wherein the composition comprises the mono-hydrochloride salt of Compound I.
  • the invention relates to a pharmaceutical composition, wherein the dose of Compound I is administered one time daily. In one aspect, the invention relates to a pharmaceutical composition, wherein the dose of Compound I is administered two times daily. In one aspect, the invention relates to a pharmaceutical composition, wherein the dose of Compound I is administered three times daily.
  • the invention relates to a method for the treatment or prevention of migraine in a mammal in need thereof comprising administering to a mammal in need of such treatment or prevention an effective amount of a composition described herein.
  • the invention relates to a method, wherein the mammal is a human.
  • the invention relates to the use of a composition described herein for the preparation of a medicament for the treatment or prevention of migraine in a mammal.
  • One embodiment of the present invention is a method using a composition of the invention for increasing activation of 5-HT 1F receptors, while avoiding vasoconstrictive activity, for treating a variety of disorders that have been linked to decreased neurotransmission of serotonin in mammals.
  • migraine migraine
  • general pain trigeminal neuralgia
  • dental pain or temperomandibular joint dysfunction pain anxiety, general anxiety disorder, panic disorder, depression, disorders of sleep, fatigue syndrome, premenstrual syndrome or late luteal phase syndrome, post-traumatic syndrome, memory loss
  • dementia including dementia of aging, social phobia, autism, attention deficit hyperactivity disorder, disruptive behavior disorders, impulse control disorders, borderline personality disorder, obsessive compulsive disorder, premature ejaculation, erectile dysfunction, bulimia, anorexia nervosa, alcoholism, tobacco abuse, mutism, and trichotillomania.
  • the disorder is chronic.
  • a composition of the invention is also useful as a prophylactic treatment for migraine.
  • DSM-IVTM Diagnostic and Statistical Manual of Mental Disorders
  • ICD-10 International Classification of Diseases, Tenth Revision
  • compositions of the invention for the activation of the 5-HT 1F receptor, for the inhibition of neuronal peptide extravasation, in general or due to stimulation of the trigeminal ganglia specifically, and/or for the treatment of any of the disorders described above, are all embodiments of the present invention.
  • compositions of the invention in the manufacture of a medicament for the activation of the 5-HT 1F receptor, for the inhibition of neuronal peptide extravasation, in general or due to stimulation of the trigeminal ganglia specifically, and/or for the treatment of any of the disorders described above, are also all embodiments of the present invention.
  • the phrase “pharmaceutically acceptable” refers to those active compounds, materials, compositions, carriers, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problems or complications, commensurate with a reasonable benefit/risk ratio.
  • Compound I or “Cmpd I” as used herein means 2,4,6-trifluoro-N-[6-(1-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide:
  • pharmaceutical formulation it is further meant that the carrier, solvent, excipients and salt must be compatible with the active ingredient of the formulation (e.g. Compound I). It is understood by those of ordinary skill in this art that the terms “pharmaceutical formulation” and “pharmaceutical composition” are generally interchangeable, and they are so used for the purposes of this application.
  • acid addition salt refers to a salt of Compound I prepared by reaction of Compound I with a mineral or organic acid.
  • acid addition salts see, e.g., Berge, S. M, Bighley, L. D., and Monkhouse, D.C., J. Pharm. Sci., 66:1, 1977. Since Compound I is an amine, it is basic in nature and accordingly reacts with any of a number of inorganic and organic acids to form an acid addition salt e.g., a pharmaceutically acceptable acid addition salt.
  • the pharmaceutically acceptable acid addition salts of the invention are typically formed by reacting Compound I with an equimolar or excess amount of acid.
  • hemi-salts can be formed by reacting Compound I with the desired acid in a 2:1 ratio, compound to acid.
  • the reactants are generally combined in a mutual solvent such as diethylether, tetrahydrofuran, methanol, ethanol, isopropanol, benzene, toluene or the like.
  • the salts normally precipitate out of solution within about one hour to about ten days and can be isolated by filtration or other conventional methods.
  • Inorganic acids commonly employed to form such salts include hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid, and the like.
  • Organic acids commonly employed to form such salts include p-toluenesulfonic acid, methanesulfonic acid, oxalic acid, p-bromophenylsulfonic acid, carbonic acid, succinic acid, citric acid, benzoic acid, acetic acid and the like.
  • salts thus are the sulfate, pyrosulfate, bisulfate, sulfite, bisulfite, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate, chloride, bromide, iodide, acetate, propionate, decanoate, caprylate, acrylate, formate, isobutyrate, caproate, heptanoate, propiolate, oxalate, malonate, succinate, hemisuccinate, suberate, sebacate, fumarate, maleate, butyne-1,4-dioate, hexyne-1,6-dioate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, hydroxybenzoate, methoxybenzoate, phthalate, sulfonate, xylenesulfonate, phenylacetate, phenylprop
  • an effective amount means an amount of Compound I which is capable of activating 5-HT 1F receptors and/or inhibiting neuronal protein extravasation.
  • suitable solvent refers to any solvent, or mixture of solvents, inert to the ongoing reaction that sufficiently solubilizes the reactants to afford a medium within which to effect the desired reaction.
  • prophylaxis treatment means causing the clinical symptoms of the disorder not to develop i.e., inhibiting the onset of the disorder or a condition, in a subject that may be exposed to or predisposed to the disorder or the condition, but does not yet experience or display symptoms.
  • prophylactic treatment refers to prophylactic treatment of migraine i.e., prevention of migraine headache.
  • treat refers to partially or completely alleviate, ameliorate, relieve, inhibit, reduce severity of, and/or reduce incidence of one or more symptoms or features of migraine.
  • the mammal to be treated by the administration of the compositions of this invention is human.
  • the type of formulation used for the administration of Compound I may be dictated by the type of pharmacokinetic profile desired from the route of administration, and the state of the patient.
  • Formulations amenable to oral, sublingual, nasal or injectable administration are prepared in a manner well known in the pharmaceutical art and comprise at least one active compound. See, e.g., REMINGTON′S PHARMACEUTICAL SCIENCES, (16th ed. 1980).
  • a formulation of the present invention includes an active ingredient (Compound I) and is usually mixed with an excipient, diluted by an excipient or enclosed within such a carrier which can be in the form of a capsule, sachet, paper or other container.
  • an excipient serves as a diluent, it can be a solid, semi-solid, or liquid material, which acts as a vehicle, carrier or medium for the active ingredient.
  • the formulations can be in the form of tablets, pills, powders, lozenges, sachets, cachets, elixirs, suspensions, emulsions, solutions, syrups, aerosols (as a solid or in a liquid medium), ointments containing for example up to 10% by weight of the active compound, soft and hard gelatin capsules, gels, suppositories, sterile injectable solutions, and sterile packaged powders.
  • the active compound In preparing a formulation, it may be necessary to mill the active compound to provide the appropriate particle size prior to combining with the other ingredients. If the active compound is substantially insoluble, it ordinarily is milled to a particle size of less than 200 mesh. If the active compound is substantially water soluble, the particle size is normally adjusted by milling to provide a substantially uniform distribution in the formulation, e.g., about 40 mesh. In one embodiment of the present invention, the particle size range is between about 0.1 ⁇ m to about 100 ⁇ m.
  • excipients include lactose, dextrose, sucrose, sorbitol, mannitol, starches, gum acacia, calcium phosphate, alginates, tragacanth, gelatin, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, water, syrup, and methyl cellulose.
  • the formulations can additionally include: lubricating agents such as talc, magnesium stearate, and mineral oil; wetting agents; emulsifying and suspending agents; preserving agents such as methyl- and propylhydroxybenzoates; sweetening agents; and flavoring agents.
  • the above ingredients are mixed and filled into hard gelatin capsules in 340 mg quantities.
  • the components are blended and compressed to form tablets, each weighing 240 mg.
  • the active ingredient is mixed with the lactose and the mixture is added to a dry powder inhaling appliance.
  • Tablet Quantity Ingredient (mg/tablet) 2,4,6-Trifluoro-N-[6-(1-methyl-piperidine- 30.0 4-carbonyl)-pyridin-2-yl]-benzamide Starch 45.0 Microcrystalline cellulose 35.0 Polyvinylpyrrolidone 4.0 (as 10% solution in water) Sodium carboxymethyl starch 4.5 Magnesium stearate 0.5 Talc 1.0 Total 120 mg
  • the active ingredient, starch and cellulose are passed through a No. 20 mesh U.S. sieve and mixed thoroughly.
  • the solution of polyvinylpyrrolidone is mixed with the resultant powders, which are then passed through a 16 mesh U.S. sieve.
  • the granules so produced are dried at 50° C.-60° C. and passed through a 16 mesh U.S. sieve.
  • the sodium carboxymethyl starch, magnesium stearate, and talc previously passed through a No. 30 mesh U.S. sieve, are then added to the granules which, after mixing, are compressed on a tablet machine to yield tablets each weighing 120 mg.
  • the active ingredient, cellulose, starch, and magnesium stearate are blended, passed through a No. 20 mesh U.S. sieve, and filled into hard gelatin capsules in 150 mg quantities.
  • the active ingredient, sucrose and xanthan gum are blended, passed through a No. 10 mesh U.S. sieve, and then mixed with a previously made solution of the microcrystalline cellulose and sodium carboxymethyl cellulose in water.
  • the sodium benzoate, flavor, and color are diluted with some of the water and added with stirring. Sufficient water is then added to produce the required volume.
  • the active ingredient, cellulose, starch, and magnesium stearate are blended, passed through a No. 20 mesh U.S. sieve, and filled into hard gelatin capsules in 425 mg quantities.
  • Intravenous Formulation Ingredient Quantity 2,4,6-Trifluoro-N-[6-(1-methyl-piperidine- 250.0 mg 4-carbonyl)-pyridin-2-yl]-benzamide Isotonic saline 1000 ml
  • the glycerol, water, sodium citrate, polyvinyl alcohol, and polyvinylpyrrolidone are admixed together by continuous stirring and maintaining the temperature at about 90° C.
  • the solution is cooled to about 50-55° C. and the active ingredient is slowly admixed.
  • the homogenous mixture is poured into forms made of an inert material to produce a drug-containing diffusion matrix having a thickness of about 2-4 mm. This diffusion matrix is then cut to form individual tablets having the appropriate size.
  • Sublingual or Buccal Tablets Ingredient Quantity (mg/tablet) 2,4,6-Trifluoro-N-[6-(1-methyl-piperidine- 5.0 (freebase 4-carbonyl)-pyridin-2-yl]-benzamide equivalent) hemi-succinnic acid salt Mannitol 20 Gelatine 2.0 Water add to total ⁇ L volume of 100 Total 27.0 mg
  • Compound I was dissolved in water containing 20% mannitol and 2% gelatine to provide a stock solution at a concentration of 50 mg/mL (free base equivalent). The solution was aliquoted into forms holding 100 ⁇ L solution each. The formulation was then frozen at ⁇ 20° C. for 3 hours and freeze dried.
  • the compound and mannitol are dissolved in water and then water is added to obtain the desired final volume.
  • the solution is then sterile filtered and aseptically filled into suitable vials.
  • Compound I is usually administered in the form of a pharmaceutical formulation comprising a pharmaceutically acceptable excipient and at least one active ingredient.
  • a pharmaceutical formulation comprising a pharmaceutically acceptable excipient and at least one active ingredient.
  • These formulations can be administered by a variety of routes including oral, buccal, rectal, intranasal, transdermal, subcutaneous, intravenous, intramuscular, and intranasal.
  • Compound I is effective as both injectable and oral compositions.
  • transdermal delivery device In order to administer transdermally, a transdermal delivery device (“patch”) is needed. Such transdermal patches may be used to provide continuous or discontinuous infusion of Compound I in controlled amounts.
  • the construction and use of transdermal patches for the delivery of pharmaceutical agents is well known in the art. See, e.g., U.S. Pat. No. 5,023,252. Such patches may be constructed for continuous, pulsatile, or on demand delivery of pharmaceutical agents.
  • Direct techniques usually involve placement of a drug delivery catheter into the host's ventricular system to bypass the blood-brain barrier.
  • a drug delivery catheter into the host's ventricular system to bypass the blood-brain barrier.
  • One such implantable delivery system used for the transport of biological factors to specific anatomical regions of the body, is described in U.S. Pat. No. 5,011,472, which is herein incorporated by reference.
  • the delivery of hydrophilic drugs may be enhanced by intra-arterial infusion of hypertonic solutions which can transiently open the blood-brain barrier.
  • a pharmaceutical formulation comprising at least Compound I as described above in a formulation adapted for buccal and/or sublingual, or nasal administration.
  • This embodiment provides administration of Compound I in a manner that avoids gastric complications, such as first pass metabolism by the gastric system and/or through the liver. This administration route may also reduce adsorption times, providing more rapid onset of therapeutic benefit.
  • Compound I may provide particularly favorable solubility profiles to facilitate sublingual/buccal formulations.
  • Such formulations typically require relatively high concentrations of active ingredients to deliver sufficient amounts of active ingredients to the limited surface area of the sublingual/buccal mucosa for the relatively short durations the formulation is in contact with the surface area, to allow the absorption of the active ingredient.
  • the very high activity of Compound I combined with its high solubility, facilitates its suitability for sublingual/buccal formulation.
  • Compound I is preferably formulated in a unit dosage form.
  • unit dosage form refers to physically discrete units suitable as unitary dosages for human subjects and other mammals, each unit containing a predetermined quantity of active material calculated to produce the desired therapeutic effect, in association with a suitable pharmaceutical excipient as described above.
  • the amount of Compound I needed to be effective depends on the chosen route of administration.
  • Compound I is useful for increasing activation of the 5-HT F receptor.
  • An increase in the activation of the 5-HT 1F is useful for treating a variety of disorders which have been linked to decreased neurotransmission of serotonin in mammals, e.g., migraine headaches.
  • Compound I may be prepared using methods known in the art. Preparations of Compound I are described in U.S. Pat. No. 7,423,050 and U.S. Publication No. 20080300407.
  • To demonstrate the use of Compound I in the treatment of migraine the ability of Compound Ito bind to the 5-HT 1F receptor subtype was determined. The ability of Compound Ito bind to the 5-HT LF receptor subtype was measured essentially as described in N. Adham, et al., Proceedings of the National 15 Academy of Sciences ( USA ), 90:408-412, 1993.
  • Membranes were prepared from transfected Ltk-cells (transfected with the human 5-HT 1F receptor sequence) which were grown to 100% confluency. The cells were washed twice with phosphate-buffered saline, scraped from the culture dishes into 5 mL of ice-cold phosphate-buffered saline, and centrifuged at 200 ⁇ g for 5 minutes at 4° C. The pellet was resuspended in 2.5 mL of ice-cold Tris buffer (20 mM Tris HCl, pH 7.4 at 23° C., 5 mM EDTA) and homogenized with a Wheaton tissue grinder. The lysate was subsequently centrifuged at 200 ⁇ g for 5 minutes at 4° C.
  • [ 3 H] 5-HT binding was performed using slight modifications of the 5-HT 1D assay conditions reported by Herrick-Davis and Knickeer ( J. Neurochem., 50:1624-1631, 1988) with the omission of masking ligands.
  • Radioligand binding studies were achieved at 37° C. in a total volume of 250 ⁇ L of buffer (50 mM Tris, 10 mM MgCl 2 , 0.2 mM EDTA, 10 ⁇ M pargyline, 0.1% ascorbate, pH 7.4 at 37° C.) in 96 well microtiter plates. Saturation studies were conducted using [ 3 H] 5-HT at 12 different concentrations ranging from 0.5 nM to 100 nM.
  • Compound I is relatively selective for the 5-HT 1F receptor, particularly in comparison to other 5-HT receptor subtypes, specifically other receptors in the 5-HT 1 subclass, as for example, but without limitation, the 5-HT 1A , 5-HT 1B , 5-HT 1D , and 5-HT 1E receptor subtypes.
  • Affinity for these other receptor subtypes can readily be determined by slight modification of the above described radioligand receptor binding assays using cells transfected with the desired receptor subtype in place of cells transfected with the 5-HT 1F receptor subtype.
  • the binding affinity of Compound I was determined by such assays and was found to be selective for the 5-HT 1F receptor; that is the affinity of Compound I for the 5-HT 1F receptor was on the whole, higher than for other receptor subtypes, particular for the 5-HT 1B and 5-HT 1D receptor subtypes.
  • the 5-HT 1F receptor is functionally coupled to a G-protein as measured by the ability of serotonin and serotonergic drugs to inhibit forskolin stimulated cAMP production in NIH3T3 cells transfected with the 5-HT 1F receptor.
  • Adenylate cyclase activity was determined using standard techniques. A maximal effect is achieved by serotonin. An E max is determined by dividing the inhibition of a test compound by the maximal effect and determining a percent inhibition.
  • Drug dose-effect curves were then conducted by adding 6 different final concentrations of drug, followed immediately by the addition of forskolin (10 ⁇ M). Subsequently, the cells were incubated for an additional 10 minutes at 37° C., 5% CO 2 .
  • Harlan Sprague-Dawley rats (225-325 g) or guinea pigs from Charles River Laboratories (225-325 g) were anesthetized with sodium pentobarbital intraperitoneally (65 mg/kg or 45 mg/kg respectively) and placed in a stereotaxic frame (David Kopf Instruments) with the incisor bar set at ⁇ 3.5 mm for rats or ⁇ 4.0 mm for guinea pigs.
  • the femoral vein was exposed and a dose of Compound I was injected intravenously (1 mL/kg). Approximately 7 minutes later, a 50 mg/kg dose of Evans Blue, a fluorescent dye, was also injected intravenously. The Evans Blue complexed with proteins in the blood and functioned as a marker for protein extravasation. Exactly 10 minutes post-injection of Compound I, the left trigeminal ganglion was stimulated for 3 minutes at a current intensity of 1.0 mA (5 Hz, 4 msec duration) with a Model 273 potentiostat/galvanostat (EG&G Princeton Applied Research).
  • the animals were killed and exsanguinated with 20 mL of saline.
  • the top of the skull was removed to facilitate the collection of the dural membranes.
  • the membrane samples were removed from both hemispheres, rinsed with water, and spread flat on microscopic slides. Once dried, the tissues were coverslipped with a 70% glycerol/water solution.
  • a fluorescence microscope (Zeiss) equipped with a grating monchromator and a spectrophotometer was used to quantify the amount of Evans Blue dye in each sample.
  • An excitation wavelength of approximately 535 nm was utilized and the emission intensity at 600 nm was determined.
  • the microscope was equipped with a motorized stage and also interfaced with a personal computer. This facilitated the computer-controlled movement of the stage with fluorescence measurements at 25 points (500 ⁇ m steps) on each dural sample. The mean and standard deviation of the measurements were determined by the computer.
  • the extravasation induced by the electrical stimulation of the trigeminal ganglion was an ipsilateral effect (i.e., occurs only on the side of the dura in which the trigeminal ganglion was stimulated). This allows the other (unstimulated) half of the dura to be used as a control.
  • the ratio of the amount of extravasation in the dura from the stimulated side compared to the unstimulated side was calculated. Saline controls yielded a ratio of approximately 2.0 in rats and 1.8 in guinea pigs. In contrast, a compound which effectively prevented the extravasation in the dura from the stimulated side would have a ratio of approximately 1.0.
  • a dose-response curve was generated and the dose that inhibited the extravasation by 50% (ID 50 ) was approximated. Compound I was assayed by the above procedure and found to significantly inhibit neuronal protein extravasation.
  • Compound I was tested in a rabbit saphenous vein contraction assay to measure their ability to mediate vasoconstriction.
  • Tissues were mounted in organ baths containing 10 mL of modified Krebs' solution of the following composition: 118.2 mMol NaCl, 4.6 mMol KCl, 1.6 mMol CaCl 2 .H 2 O, 1.2 mMol KH 2 PO 4 , 1.2 mMol MgSO 4 , 10.0 mMol dextrose and 24.8 mMol NaHCO 3 .
  • Tissue bath solutions were maintained at 37° C. and aerated with 95% O 2 and 5% CO 2 . An initial optimum resting force of 1 gm was applied to the saphenous vein.
  • Isometric contractions were recorded as changes in grams of force on a Beckman Dynograph with Statham UC-3 transducers and microscale accessory attachments. Tissues were allowed to equilibrate 1 to 2 hours before exposure to drugs. Cumulative agonist concentration-response curves were generated in tissues and no tissue was used to generate more than two agonist concentration-response curves. Results are expressed as a mean EC 50 and the maximal response expressed as a percentage of the maximal tissue contraction response to 67 mM KCl administered initially to each tissue.
  • This vasoconstriction assay measures two important parameters, saphenous vein contraction (EC 50 ) and maximal contraction as a % maximal KCl response (% max KCl).
  • the saphenous vein contraction (EC 50 ) is a measure of the dose required to contract tissue to 50% of the maximal response that the specific compound is capable of mediating.
  • the maximal response that the saphenous vein is capable of exhibiting is measured after administration of a high concentration (67 mM) of KCl.
  • the % maximal KCl contraction is the ratio of the maximal response that the specific compound is capable of mediating divided by the maximal response that the tissue can produce upon stimulation with KCl.
  • a compound may be considered to not have significant vasoconstrictive activity if it produces a maximal contraction of less than or equal to 5% of the contraction produced by the 67 mM KCl positive control at compound concentrations of up to 100 ⁇ M.
  • Compound I was tested with the above saphenous vein assay and found to not be significantly vasoconstrictive. This contrasts greatly with prior art compounds for the treatment of migraine targeting the neural vasoconstrictive model for migraine treatment, which compounds were selected on the basis of strong vasoconstrictive activity, as for example, sumatriptan (known migraine treatment), which has an EC 50 of 0.66 mM and a % max KCl of 64.20 in this assay.
  • sumatriptan known migraine treatment
  • the specificity Compound I for 5-HT 1F mediated inhibition of neuronal protein extravasation versus vasoconstrictive activity can be expressed with a Specificity Index, which is the ratio of vasoconstriction to efficacy in inhibiting neuronal protein extravasation:
  • the Corrected Vasoconstriction takes into consideration the maximal contraction relative to KCl for each individual compound, and is defined as the vasoconstriction EC 50 value divided by the % max KCl.
  • sumatriptan has a corrected vasoconstriction EC 50 of 1.03 ⁇ 10 ⁇ 8 M (0.66 mM EC 50 ⁇ 64.20% max , KCl) and an extravasation inhibition ID 50 of 2.6 ⁇ 10-8 mMol/Kg, giving a Specificity Index of 0.40.
  • the compound is shown to be an agonist or partial agonist with an E max of at least about 50%, measure efficacy of the compound in inhibition of protein extravasation and saphenous vein contraction using the above described assays;
  • a compound with a Specificity Index greater than 1 is useful for the methods and uses of the present invention, larger values for the Specificity Index are preferred.
  • a larger Specificity Index indicates greater specificity for efficacy in inhibition of neuronal protein extravasation over vasoconstriction.
  • a study is conducted to evaluate the efficacy (headache response at two hours) of a range of oral doses of Compound L
  • a secondary objective is to explore the time course and effect of a range of dose levels of Compound I on features of the migraine including: headache response, proportion of patients pain-free, headache recurrence, nausea, photophobia, phonophobia, vomiting, disability, use of rescue medication and patient global impression.
  • the study explores the safety and tolerability of a range of doses of Compound I in terms of adverse events, physical exam, vital signs, laboratory evaluations, and ECGs.
  • the study protocol is outlined below:
  • Patients are asked to treat a single migraine attack with study medication at home.
  • Each subject's study participation consists of a screening visit with a telephone contact within 5 days to confirm eligibility, a treatment period of up to 8 weeks during which the subject is asked to treat one migraine attack with a single dose of one of four dose levels of oral Compound I or placebo, and a follow-up visit within 14 days of treating an attack.
  • subjects are randomly assigned to receive oral Compound I (50, 100, 200 or 400 mg) or matching placebo to use as the first treatment of a new migraine attack.
  • Subjects are instructed not to treat an attack until their eligibility has been confirmed by phone once all screening evaluations are complete. Once eligibility is confirmed subjects are asked to treat their next migraine attack within 4 hours of its onset providing that the headache severity is at least moderate at that time and not improving. Subjects record their response over the next 48 hours using a diary card. Subjects are asked not to use rescue medication until at least 2 hours after taking the study medication.
  • subjects contact the clinic to schedule a follow-up visit as soon as possible and within 14 days of treatment.
  • Patients are allocated to one of four dose levels of Compound I or matching placebo in the ratio 1:1:1:1:1 according to a predefined randomization list. At least 340 patients treat one attack with study medication.
  • Subjects are excluded from the study if any of the following criteria are met: History of life threatening or intolerable adverse reaction to any triptan; Use of prescription migraine prophylactic drugs within 30 days prior to Screening Visit and during study participation; Pregnant or breast-feeding women; Women of child-bearing potential not using highly effective contraception; History or evidence of coronary artery disease, ischemic or hemorrhagic stroke, epilepsy or any other condition placing the patient at increased risk of seizures; History of hypertension (controlled or uncontrolled); History of orthostatic hypotension; Sitting BP>160 mmHg systolic or >90 mmHg diastolic on 2 repeated measurements at screening; Current use of hemodynamically active cardiovascular drugs; History within the previous 3 years or current evidence of abuse of any drug, prescription or illicit, or alcohol; Significant renal or hepatic impairment; Previous participation in this clinical trial; Participation in any clinical trial of an experimental drug or device in the previous 30 days; Any medical condition or laboratory test which in the judgment of the investigator makes the
  • Efficacy/Pharmacodynamics Headache severity (4 point scale: none, mild, moderate, severe); Headache recurrence within 48 hours; Presence or absence of nausea; phonophobia, photophobia, vomiting; Disability (4 point scale: none, mild, moderate, severe); Requirement for rescue medication between 2 and 48 hours (yes or no); Patient global impression (7 point scale); Time to headache relief and time to pain free
  • This multi-center, randomized, double-blind, parallel-group, placebo-controlled clinical study is designed to evaluate the efficacy and safety of oral Compound T in the acute treatment of migraine.
  • the proportion of subjects with headache relief 2 hours post dose is the primary efficacy parameter.
  • the primary efficacy analysis tests the null hypothesis that the proportions of subjects with headache relief 2 hours post dose are the same in the five study arms, versus the alternative hypothesis of a positive linear trend in the response rates, using the Cochran-Armitage test for trend.
  • the primary analysis is performed in the modified intent-to-treat population, defined as all subjects who treat an attack with study medication, using a one-sided test at the 5% level of significance. Patients who fail to document headache severity at 2 hours or use of rescue medication before that time point are excluded from the analysis set.
  • the sample size was estimated assuming a response rate of 40% in the placebo arm and a 65% rate in the highest active dose arm. Assuming that the treatment groups are equally spaced and that the response odds ratios are equal between pairs of adjacent dose groups, the required sample size was estimated using the approach of Nam (1987). Based on 1:1:1:1:1 randomization, a total sample size of 330 patients (66 per group) is required for 90% power, based on a one-sided test at the 5% level of significance.
  • Compound I is a novel, highly selective and potent agonist at 5-HT 1F receptors that lacks vasoconstrictor activity.
  • Preclinical and early clinical experiments predict acute anti-migraine efficacy of Compound I that is mediated through a non-vascular, primarily neural, mechanism.
  • 130 patients were treated in-hospital during a migraine attack.
  • Patients were allocated to an intravenous dose level of Compound I or placebo in small cohorts.
  • the starting dose was 2.5 mg.
  • Subsequent doses were adjusted, up or down, according to the safety and efficacy seen in the preceding cohort.
  • the primary outcome measure was headache response defined as improvement from moderate or severe headache at baseline to mild or no headache at 2 hours post-dose.
  • the study was designed to explore the overall dose response relationship but was not powered to differentiate individual doses from placebo, nor to detect effect differences for other migraine symptoms.
  • Compound I was generally well tolerated. Adverse events were reported by 65% of patients on Compound I and by 43% on placebo and were generally mild. Dizziness, paresthesiae and sensations of heaviness (usually limb) were more common on Compound I. At intravenous doses of 20 mg and higher, Compound I proved effective in the acute treatment of migraine. Without wishing to be bound by theory, the non-vascular, neural mechanism of action of Compound I may offer an alternative means to treat migraine especially in patients who have contraindications for agents with vasoconstrictor activity.
  • the present study was a multinational, multi-center clinical trial conducted at 11 sites in Germany, 4 in Finland, and 3 in the Netherlands. The study was conducted in accordance with the Declaration of Helsinki and internationally accepted standards of Good Clinical Practice. Prior to initiation it was approved by the relevant regulatory authorities and independent ethics committees. All subjects gave written informed consent.
  • the clinicaltrials.gov identifier is NCT00384774.
  • the first cohort was allocated to the 2.5 mg dose level.
  • the dose used in subsequent cohorts depended on the headache response (moderate or severe headache reduced to mild or none at 2 hours) of the previous cohort: if 2 or less of the 4 active-treated patients had responded, the dose was increased, and if 3 or more of the 4 active-treated patients had responded, the dose was reduced.
  • the dose adjustment rules were chosen to identify doses of Compound I with efficacy similar to or better than an oral triptan. This dose escalation or reduction sequence would be modified if 2 or more active-treated patients in any cohort experienced a severe non-serious adverse event, in which case the dose would be reduced for the next cohort irrespective of the response rate.
  • the up-and-down dose adjustment process was terminated with the selection of an effective dose when the following criteria had been met: at least 5 blocks of patients had been treated at this dose, and for at least 4 blocks the decision rule called for a dose decrease.
  • the dose selection process could have been terminated, without the selection of an effective dose, if 5 consecutive blocks of patients had been treated at the top dose with the escalation rules calling for a dose increase each time.
  • Patients were initially screened for eligibility at an out-patient visit outside a migraine attack, and were invited to return to the clinic for treatment with study medication of a new, moderate or severe migraine attack within 4 hours of onset. On return to the clinic, eligibility for the study was reconfirmed and the patient was randomized. Patients were eligible for the study if they were between 18 and 65 years of age and had at least a 1 year history of migraine with or without aura fulfilling the IHS diagnostic criteria 1.1 and 1.2.1 (2004), with a migraine onset before the age of 50 years (Headache Classification Subcommittee of the International Headache Society. The International Classification of Headache Disorders (second edition). Cephalalgia 2004: 24; Suppl 1:1-160).
  • Compound I or placebo was infused intravenously over 20 minutes and the patient was monitored for safety and efficacy for at least 4 hours. Data were entered concurrently into an online electronic data capture system. Patients were discharged from the clinic after 4 h and continued to record migraine symptoms and adverse events until 24 h using a diary card.
  • the primary efficacy measure was headache response, defined as a reduction in headache severity from moderate or severe at baseline to mild or no headache at 2 hours after initiation of infusion of study drug (HIS Clinical Trials Subcommittee. Guidelines for Controlled Trials in Migraine: second edition, Cephalalgia 2000:20:765-786).
  • the secondary efficacy measures were: rates of headache response at 10 min, 20 min, 40 min, 60 min, 90 min, 180 min, and 240 min after initiation of study drug infusion; rates of headache free (reduction from moderate or severe headache at baseline to no headache pain) at 10 min, 20 min, 40 min, 60 min, 90 min, 120 min, 180 min, and 240 min after initiation of study drug; rates of sustained response, defined as a moderate or severe headache at baseline which became mild or no headache at 2 h after initiation of study drug and which did not recur (become moderate or severe) within 24 h of initiation of study drug; rates of sustained pain-free, defined as a moderate or severe headache at baseline which became no headache at 2 h after initiation of study drug and which did not recur (become mild, moderate or severe) within 24 h of initiation of study drug; presence of nausea, vomiting, photophobia and phonophobia, and degree of clinical disability throughout the study course; proportion of patients using rescue medication between 2 and 24 h after initiation of study drug
  • the statistical properties of the hypothesis tests to compare one or more dose levels to placebo when doses are allocated using the group sequential adaptive treatment assignment design were not known. Formal statistical tests were therefore not used to declare the study to be “positive” or “negative” and the study was not powered for statistical significance. Furthermore, the sample size was not powered for statistical considerations.
  • the headache response rates were summarized by dose level.
  • the Mantel-Haenszel test was used to test for a dose-response relationship. Since the study terminated due to selection of an effective dose, Fisher's exact test was used to compare the headache response rates for the selected dose versus placebo. In all analyses, the results for each dose level (including placebo) were combined across all blocks where that dose was used.
  • the dose escalation was terminated after 130 patients, when the predefined stopping rules identified 20 mg as an effective dose based on the results for the primary endpoint ( FIGS. 2 and 3 ).
  • a higher proportion of patients showed a 2 h headache response in the 10 mg, 20 mg, 30 mg, and 45 mg Compound I dose groups (54.2% to 75%) compared to placebo (45.2%) ( FIG. 3 ).
  • Table 2 shows the proportion of patients in each group who achieved a headache response at time points from 10 min to 4 h. Doses of 20 mg and above start to separate from placebo as early as 20 min after the start of the infusion.
  • the acute antimigraine efficacy of Compound I was tested. Its effect is most likely mediated through a primarily neural and non-vascular mechanism.
  • a relatively novel up-and-down dose-adaptive study design was used to minimize patient exposure to study drug or placebo while still rapidly and reliably screening for efficacy and tolerability across a wide dose range.
  • a clear dose-related efficacy of Compound I was found in the acute treatment of a migraine attack. The onset of headache relief was evident at 20 to 40 min after the start of a 20 min intravenous infusion.
  • One aspect of the present invention includes the treatment and prevention of migraine in the particular subpopulation of patients who cannot tolerate, or have contraindications for, triptans.
  • Compound I was well tolerated. There were no clinically significant abnormalities of any safety parameters, i.e. heart rate, blood pressure, 12-lead ECG, hematology, biochemistry and urine analysis, following administration of Compound I. No patient terminated treatment because of side effects. There were also no patient-reported chest symptoms or chest discomfort.
  • An adaptive design was used to identify the lowest effective dose. This is achieved with minimal patient exposure to ineffective low doses compared to a parallel group design, where the distribution of patients to dose groups is predefined. Furthermore, choice of a low starting dose and gradual escalation with ongoing safety monitoring ensured that risk to the patients was minimized.
  • FIGS. 4-9 Further data from this study is shown in FIGS. 4-9 .
  • FIGS. 4A and 4B show that in addition to headache relief at 2 hours after iv administration of Compound I, 30 mg iv over 20 minutes completely abolished headache in a greater number of patients than placebo ('pain free'). The numbers in bars are N treated at each dose.
  • FIG. 5 is a time course of response which shows that 20 and 30 mg iv gave a speed onset of headache relief.
  • FIGS. 6A and 6B show intravenous administration of Compound I sustained pain response and rescue medication.
  • FIG. 6A shows pain did not worsen or require rescue medication within 24 hours.
  • FIG. 6B shows patients who used rescue medication within 24 hours.
  • the administration of 30 mg iv reduced headache recurrence within 24 hours and reduced the use of rescue medication.
  • FIG. 7 shows the percent reporting disability following intravenous administration of Compound I.
  • the administration of 30 mg iv of Compound I reduced the percent of moderate or severe disability reported.
  • FIG. 8 shows patient global impressions following iv administration of Compound I. Specifically, FIG. 8 shows the percent of patients who reported feeling “very much” or “much better” 2 hours post dose. Numbers in bars are N treated at each dose. The administration of 30 mg iv of Compound I increased the number of patients who felt much or very much better.
  • FIG. 9 shows secondary endpoints (photophobia, phonophobia, and nausea) for intravenous administration of Compound I.
  • the administration of 30 mg iv reduced associated symptoms of photophobia, phonophobia, and nausea.
  • the objectives of this study include 1) to assess the safety, tolerability, and pharmacokinetics of oral Compound I over the ranges of 25-400 mg using a solution to avoid solid-formulation dependent effects; 2) to assess the relative bioavailability of tablet formulation compared to the oral solution; 3) to assess the pharmacokinetics of a tablet formulation of Compound I over the range of 50-400 mg; 4) to compare the safety, tolerability, and pharmacokinetics of a tablet formulation of Compound I in healthy males and females.
  • Study 2-Part 1 is a double-blinded, randomized, double-dummy comparison of 200 mg Compound I given as an oral solution and as a tablet formulation; 28 healthy male subjects received in crossover fashion the oral solution and the tablet on 2 separate dosing days.
  • Part 2 is a double-blinded randomized dose comparison; 14 male subjects (13 from Part 1 and 1 new subject) and 14 healthy females received 50 mg and 400 mg of Compound I as tablets in crossover fashion on 2 separate dosing days. Doses of Compound I or a pharmaceutically acceptable salt thereof above 400 mg administered orally are not well tolerated.
  • Plasma samples were analyzed for Compound I using a validated liquid chromatography with tandem mass spectrometric detection (LC/MS/MS) method. Relative bioavailability of tablet and solution formulations for AUC t , AUC ⁇ , and C max were assessed.
  • a linear mixed effects model was fitted to the log-transformed PK parameters (AUC t , AUC ⁇ , and C max ). Included in the model were treatment, period, and sequence as fixed factors and subjects nested within sequences as a random factor.
  • the tablet formulation was the test and the solution formulation was the reference. 90% confidence intervals and ratios for the relative mean in-transformed AUC t , AUC ⁇ , and C max of the test to reference formulation were calculated.
  • Doses of 50 mg and above of both the solution and the tablet formulation achieved plasma levels previously associated with efficacy by the i.v. routes.
  • the plasma-concentration time profile of Compound I following oral administration of solution doses of 50-400 mg compared to a 30 mg i.v. infusion is shown in FIG. 10 .
  • the pharmacokinetics of orally administered Compound I showed dose linearity from 25 to 400 mg in both males and females ( FIGS. 11A and 11B ).
  • the relative bioavailability of the tablet to the solution was 100% as assessed at the 200 mg dose, achieving the same C max and AUC as the solution with only a slight delay in tmax ( FIG. 12 ).
  • the pharmacokinetic parameters of Compound I were similar following oral administration of the tablet formulation in males and females ( FIG. 13 ).
  • Compound I is orally bioavailable, and at doses of 50 mg and above achieves plasma levels previously associated with acute migraine efficacy after intravenous administration.
  • the tablet formulation gives similar plasma profiles to an oral solution with the expected slight delay in t max associated with disintegration and dissolution of the tablet.
  • Compound I shows dose proportionality with similar pharmacokinetics in males and females.
  • the objective is to predict an oral dose range of Compound I that is at least as effective as sumatriptan in the acute treatment of migraine.
  • Compound I a neutrally acting anti-migraine agent, is a selective agonist at 5-HT 1F receptors that, unlike triptans, is not a vasoconstrictor.
  • FIG. 6A The relationship between plasma concentrations and headache response was analyzed using population pharmacokinetics-pharmacodynamic (PK-PD) modeling.
  • PK-PD population pharmacokinetics-pharmacodynamic
  • a subsequent Phase I trial studied the PK of an oral liquid formulation of Compound I. Using the relationship between plasma levels and headache response, together with oral PK of Compound I, an oral dose range was predicted that is expected to provide acute migraine relief.
  • PK measured and headache scored (4 point scale; 0-3 no headache to severe headache) for 4 hours.
  • FIG. 16 Plasma concentration verses time profiles are described by compartmental models ( FIG. 16 , upper part): drug is assumed to distribute into one or more interconnected hypothetical compartments, which mimics drug absorption, distribution, and elimination processes.
  • FIG. 14 is a schematic representation of a PK-PD model. PK part is indicated with rectangles having vertical lines, hysteresis (delay) is indicated with a rectangle having horizonatal lines, and PD part is indicated with an oval.
  • Target site is often in an organ or peripheral tissue, rather than in plasma. Therefore, distribution to target site may cause delay (hysteresis). In general, this is accounted for using an “effect compartment model”:
  • a population PK-PD model was developed to describe the relationship between plasma concentration and headache response.
  • Headache response was a categorical response (scores 0/1/2/3 i.e., none/mild/moderate/severe), which was modeled using a proportional odds model: “Estimation of time course probability to have a given score after administration of placebo (natural time course of attack) or drug (drug effect on headache).”
  • a population PK model was developed to describe the concentration-time profile of Compound I in plasma after oral administration.
  • Pain Relief should be at least 12% after 30 min.
  • Placebo corrected Pain Relief was used, because headache response in placebo treated subjects differs between trials.
  • FIG. 15 shows the cumulative probability to have a certain headache score versus time.
  • Dots represent observed headache response; lines represent predictions by PK-PD model; shaded areas indicate prediction uncertainty, obtained from the uncertainty of the parameter estimates.
  • Doses were administered intravenously.
  • FIG. 16 shows examples of concentration time profiles after different oral doses. Dots represent measured plasma concentrations; lines represent individual represent individual predictions by PK model; broken lines represent population predictions by PK model (prediction for typical subject in population). Doses were administered orally.
  • FIG. 17 shows the percent pain relief at 30 minutes post dose versus time to select an effective dose.
  • Line represents median prediction of percent pain relief by PK-PD model; shaded areas indicate prediction uncertainty, obtained from the uncertainty of the parameter estimates.
  • Target level compared to intranasal sumatriptan; placebo corrected pain relief should be at least 12%. Since the placebo response in the Phase II trial was 18%; pain relief is at least 30%.
  • the PK model adequately described the concentration-time profiles after oral administration of different doses of Compound I ( FIG. 16 ).
  • the model was used to predict migraine relief at 30 minutes after oral dosing of Compound I ( FIG. 17 ).
  • the target level derived from published sumatriptan data is indicated in FIG. 17 .
  • the predicted oral dose range needed to reach the desired therapeutic target is 170 mg and above.
  • PK-PD model was developed, which adequately described the relation between plasma concentration and response (headache scores). On the basis of this concentration versus response relationship, an effective dose range 50-400 mg for an oral dose ranging study in migraine using an oral tablet formulation was identified.

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US12138254B2 (en) 2018-09-04 2024-11-12 Eli Lilly And Company Chronic nightly dosing of lasmiditan for migraine prevention
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JP7566996B2 (ja) 2024-10-15
MX2011010359A (es) 2012-02-23
JP6887462B2 (ja) 2021-06-16
JP2015013903A (ja) 2015-01-22
WO2010115125A2 (en) 2010-10-07
LT2413933T (lt) 2018-02-26
FR23C1002I1 (fr) 2023-03-10
JP5727457B2 (ja) 2015-06-03
JP2012522805A (ja) 2012-09-27
CA2757019A1 (en) 2010-10-07
PL2413933T5 (pl) 2021-10-18
DK2413933T4 (da) 2021-08-23
SI2413933T2 (sl) 2021-09-30
HUE037261T2 (hu) 2018-08-28
US20250228839A1 (en) 2025-07-17
JP2023175694A (ja) 2023-12-12
EP2413933A4 (en) 2012-09-19
CY2023001I1 (el) 2023-03-24
FR23C1002I2 (fr) 2023-11-24
CN102753171A (zh) 2012-10-24
JP7335397B2 (ja) 2023-08-29
AU2010232497B2 (en) 2016-05-19
EP2413933A2 (en) 2012-02-08
KR101697801B1 (ko) 2017-01-18
PL2413933T3 (pl) 2018-04-30
KR20110136893A (ko) 2011-12-21
NL301214I1 (enrdf_load_stackoverflow) 2023-01-25
JP7110446B2 (ja) 2022-08-01
HRP20171742T1 (hr) 2018-02-09
HUS2300004I1 (hu) 2023-02-28
CA2757019C (en) 2018-05-15
LTPA2023502I1 (enrdf_load_stackoverflow) 2023-01-25
HK1243923A1 (zh) 2018-07-27
IL215483A (en) 2017-07-31
US12257246B2 (en) 2025-03-25

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