TR199802227T2 - CEA'ya kar�� monoklonal antikor, bahsedilen antikoru i�eren konj�gatlar ve bunlar�n bir ADEPT siteminde terap�tik kullan�mlar�. - Google Patents

CEA'ya kar�� monoklonal antikor, bahsedilen antikoru i�eren konj�gatlar ve bunlar�n bir ADEPT siteminde terap�tik kullan�mlar�.

Info

Publication number
TR199802227T2
TR199802227T2 TR1998/02227T TR9802227T TR199802227T2 TR 199802227 T2 TR199802227 T2 TR 199802227T2 TR 1998/02227 T TR1998/02227 T TR 1998/02227T TR 9802227 T TR9802227 T TR 9802227T TR 199802227 T2 TR199802227 T2 TR 199802227T2
Authority
TR
Turkey
Prior art keywords
antibody
monoclonal antibody
therapeutic use
conjugates containing
adept system
Prior art date
Application number
TR1998/02227T
Other languages
English (en)
Turkish (tr)
Inventor
Graham Copley Clive
Derek Edge Michael
Charles Emery Stephen
Original Assignee
Zeneca Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9609405.7A external-priority patent/GB9609405D0/en
Priority claimed from GBGB9703103.3A external-priority patent/GB9703103D0/en
Application filed by Zeneca Limited filed Critical Zeneca Limited
Publication of TR199802227T2 publication Critical patent/TR199802227T2/xx

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y5/00Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6891Pre-targeting systems involving an antibody for targeting specific cells
    • A61K47/6899Antibody-Directed Enzyme Prodrug Therapy [ADEPT]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70503Immunoglobulin superfamily
    • C07K14/70532B7 molecules, e.g. CD80, CD86
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K16/00Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/30Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
    • C07K16/3007Carcino-embryonic Antigens
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14Hydrolases (3)
    • C12N9/48Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/52Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from bacteria or Archaea
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14Hydrolases (3)
    • C12N9/48Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/64Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
    • C12N9/6421Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K2317/00Immunoglobulins specific features
    • C07K2317/20Immunoglobulins specific features characterized by taxonomic origin
    • C07K2317/24Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K2319/00Fusion polypeptide

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Medicinal Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Zoology (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Engineering & Computer Science (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Cell Biology (AREA)
  • Microbiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Nanotechnology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oncology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Epidemiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Peptides Or Proteins (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
TR1998/02227T 1996-05-04 1997-04-29 CEA'ya kar�� monoklonal antikor, bahsedilen antikoru i�eren konj�gatlar ve bunlar�n bir ADEPT siteminde terap�tik kullan�mlar�. TR199802227T2 (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9609405.7A GB9609405D0 (en) 1996-05-04 1996-05-04 Protein
GBGB9703103.3A GB9703103D0 (en) 1997-02-14 1997-02-14 Protein

Publications (1)

Publication Number Publication Date
TR199802227T2 true TR199802227T2 (xx) 2000-07-21

Family

ID=26309272

Family Applications (1)

Application Number Title Priority Date Filing Date
TR1998/02227T TR199802227T2 (xx) 1996-05-04 1997-04-29 CEA'ya kar�� monoklonal antikor, bahsedilen antikoru i�eren konj�gatlar ve bunlar�n bir ADEPT siteminde terap�tik kullan�mlar�.

Country Status (19)

Country Link
US (2) US6277599B1 (OSRAM)
EP (1) EP0896626B1 (OSRAM)
JP (1) JP2000510692A (OSRAM)
CN (1) CN1217750A (OSRAM)
AT (1) ATE350478T1 (OSRAM)
AU (1) AU719513B2 (OSRAM)
BR (1) BR9708910A (OSRAM)
CA (1) CA2250579A1 (OSRAM)
CZ (1) CZ353698A3 (OSRAM)
DE (1) DE69737188T2 (OSRAM)
ES (1) ES2279539T3 (OSRAM)
HU (1) HUP9901562A3 (OSRAM)
IL (1) IL126772A0 (OSRAM)
NO (1) NO985120L (OSRAM)
NZ (1) NZ331978A (OSRAM)
PL (1) PL329871A1 (OSRAM)
SK (1) SK150298A3 (OSRAM)
TR (1) TR199802227T2 (OSRAM)
WO (1) WO1997042329A1 (OSRAM)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9708910A (pt) * 1996-05-04 1999-08-03 Zeneca Ltd Anticorpo conjugado sequência de polinucleotídeos vetor célula hospedeira hibridoma composição farmacêutica processos para fabricar um anticorpo ou um conjugado e para tratar um humano ou animal em necessidade deste tratamento
AU6000698A (en) * 1997-02-14 1998-09-08 Zeneca Limited Proteins
GB9709421D0 (en) * 1997-05-10 1997-07-02 Zeneca Ltd Chemical compounds
JP2002504372A (ja) * 1998-02-25 2002-02-12 ザ ダウ ケミカル カンパニー 高親和性ヒト型化抗−ceaモノクロ−ナル抗体
WO2000029583A2 (en) * 1998-11-19 2000-05-25 Incyte Pharmaceuticals, Inc. Immunoglobulin superfamily proteins
WO2000037615A1 (en) * 1998-12-21 2000-06-29 Eli Lilly And Company Recombinant synthesis of beta-lipotropin and other peptides
GB2371803A (en) * 1999-11-18 2002-08-07 Oxford Biomedica Ltd Antibodies
EP1242456B1 (en) * 1999-11-18 2008-10-15 Oxford Biomedica (UK) Limited Scfv antibodies against disease associated molecules
ATE372130T1 (de) * 2000-04-22 2007-09-15 Pharmedartis Gmbh Apoptotika
GB0210783D0 (en) * 2002-05-10 2002-06-19 Polonelli Luciano Anti-microbial polypeptides
KR100604037B1 (ko) * 2002-08-02 2006-07-24 주식회사유한양행 항체 경쇄 카파 발현벡터
US20050008618A1 (en) * 2003-02-27 2005-01-13 Howard Kaufman Composition for delivering an agent to a target cell and uses thereof
EP1606387A4 (en) * 2003-03-04 2008-04-23 Alexion Pharma Inc VECTORS USED TO PRODUCE CONSTANT HYBRID AREAS
JP2007525458A (ja) * 2003-04-23 2007-09-06 メダレックス インコーポレイテッド インターフェロンα受容体−1(IFNAR−1)に対するヒト化抗体
WO2005058236A2 (en) * 2003-12-12 2005-06-30 Genencor International, Inc. Cab molecules
US20050232919A1 (en) 2004-02-12 2005-10-20 Morphotek, Inc. Monoclonal antibodies that specifically block biological activity of a tumor antigen
ATE478894T1 (de) * 2004-04-15 2010-09-15 Genencor Int Anti-cea scfv-beta-lactamase konstrukte (cab moleküle) in adept
EP1814568A4 (en) 2004-10-29 2009-08-12 Univ Southern California COMBINATION IMMUNOTHERAPY AGAINST CANCER WITH COSTIMULATORY MOLECULES
AU2006223301B2 (en) 2005-03-10 2010-11-04 Eisai, Inc. Anti-mesothelin antibodies
US20060239910A1 (en) 2005-04-22 2006-10-26 Morphotek Inc. Antibodies with immune effector activity and that internalize in folate receptor alpha-positive cells
CA2623429C (en) 2005-09-30 2015-01-13 Medimmune Limited Interleukin-13 antibody composition
WO2008011157A2 (en) 2006-07-20 2008-01-24 The General Hospital Corporation Methods, compositions, and kits for the selective activation of protoxins through combinatorial targeting
US8043830B2 (en) * 2008-02-01 2011-10-25 The Regents Of The University Of California Biotin-ligase system for secretion of biotinylated protein
CN101607985B (zh) * 2008-12-24 2013-03-27 中国科学院生物物理研究所 抗人cea的单克隆抗体,包含其的组合物,及其用途
CN101704892B (zh) * 2009-12-09 2014-02-12 中国人民解放军军事医学科学院生物工程研究所 一种抗uPAR人源化抗体及其编码基因与应用
AR080027A1 (es) * 2010-01-28 2012-03-07 Glaxo Group Ltd Proteinas de union a cd127
WO2012158818A2 (en) 2011-05-16 2012-11-22 Fabion Pharmaceuticals, Inc. Multi-specific fab fusion proteins and methods of use
WO2013059885A2 (en) 2011-10-28 2013-05-02 Cephalon Australia Pty Ltd Polypeptide constructs and uses thereof
CN102526707B (zh) * 2012-01-13 2015-04-22 成都博发生物技术有限公司 共刺激因子及融合蛋白的新用途
RU2493166C1 (ru) * 2012-04-09 2013-09-20 Общество с ограниченной ответственностью "Технофарма" Наноантитело, специфически связывающее белок сеа, способ его использования для детекции этого белка
CN102838676A (zh) * 2012-09-26 2012-12-26 李彬 一种癌胚抗原单抗及包含该抗体的芯片以及应用
AU2013328580B2 (en) 2012-10-12 2016-01-21 Medimmune Limited Pyrrolobenzodiazepines and conjugates thereof
MX362970B (es) 2013-03-13 2019-02-28 Medimmune Ltd Pirrolobenzodiazepinas y conjugados de las mismas.
US11117975B2 (en) 2013-04-29 2021-09-14 Teva Pharmaceuticals Australia Pty Ltd Anti-CD38 antibodies and fusions to attenuated interferon alpha-2B
EP2992013B1 (en) 2013-04-29 2019-12-04 Teva Pharmaceuticals Australia Pty Ltd Anti-cd38 antibodies and fusions to attenuated interferon alpha-2b
UA119352C2 (uk) 2014-05-01 2019-06-10 Тева Фармасьютикалз Острейліа Пті Лтд Комбінація леналідоміду або помалідоміду і конструкції анти-cd38 антитіло-атенуйований інтерферон альфа-2b та спосіб лікування суб'єкта, який має cd38-експресуючу пухлину
CN106687141A (zh) 2014-09-10 2017-05-17 麦迪穆有限责任公司 吡咯并苯并二氮杂卓及其缀合物
IL251822B2 (en) 2014-10-29 2023-03-01 Teva Pharmaceuticals Australia Pty Ltd Variants of interferon alpha-2-b
CN109476756B (zh) 2016-03-15 2022-05-31 埃泰美德(香港)有限公司 一种多特异性Fab融合蛋白及其用途
WO2018014067A1 (en) 2016-07-19 2018-01-25 Teva Pharmaceuticals Australia Pty Ltd Anti-cd47 combination therapy
WO2018069289A1 (en) 2016-10-11 2018-04-19 Medimmune Limited Antibody-drug conjugates with immune-mediated therapy agents
CN111533805B (zh) * 2016-12-04 2022-02-08 深圳市国创纳米抗体技术有限公司 一种抗癌胚抗原的高亲和力纳米抗体及其应用
SG11202010469QA (en) 2018-05-23 2020-11-27 Adc Therapeutics Sa Molecular adjuvant
US12460000B2 (en) 2018-09-07 2025-11-04 Itabmed (Hk) Limited Anti-CD19 and anti-CD3 bispecific antigen binding proteins and uses thereof
WO2021041725A1 (en) * 2019-08-27 2021-03-04 The Trustees Of The Univeristy Of Pennsylvania SYNTHETIC CARS TO TREAT IL13Rα2 POSITIVE HUMAN AND CANINE TUMORS
WO2022079211A1 (en) 2020-10-16 2022-04-21 Adc Therapeutics Sa Glycoconjugates
CN112409485B (zh) * 2020-10-21 2022-10-25 北京纽安博生物技术有限公司 抗CEACAM6单域抗体、人源化单域抗体及其Fc融合蛋白和应用
GB202102396D0 (en) 2021-02-19 2021-04-07 Adc Therapeutics Sa Molecular adjuvant
EP4426727A2 (en) 2021-11-03 2024-09-11 Hangzhou Dac Biotech Co., Ltd. Specific conjugation of an antibody

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8809616D0 (en) 1988-04-22 1988-05-25 Cancer Res Campaign Tech Further improvements relating to drug delivery systems
GB9014932D0 (en) * 1990-07-05 1990-08-22 Celltech Ltd Recombinant dna product and method
AU6819494A (en) * 1993-04-26 1994-11-21 Genpharm International, Inc. Transgenic non-human animals capable of producing heterologous antibodies
GB9324807D0 (en) 1993-12-03 1994-01-19 Cancer Res Campaign Tech Tumour antibody
US5874540A (en) * 1994-10-05 1999-02-23 Immunomedics, Inc. CDR-grafted type III anti-CEA humanized mouse monoclonal antibodies
BR9708910A (pt) * 1996-05-04 1999-08-03 Zeneca Ltd Anticorpo conjugado sequência de polinucleotídeos vetor célula hospedeira hibridoma composição farmacêutica processos para fabricar um anticorpo ou um conjugado e para tratar um humano ou animal em necessidade deste tratamento

Also Published As

Publication number Publication date
CZ353698A3 (cs) 1999-02-17
ATE350478T1 (de) 2007-01-15
WO1997042329A1 (en) 1997-11-13
US20020142359A1 (en) 2002-10-03
NO985120L (no) 1998-12-29
HUP9901562A3 (en) 2000-06-28
DE69737188D1 (de) 2007-02-15
DE69737188T2 (de) 2007-10-11
NZ331978A (en) 2000-05-26
JP2000510692A (ja) 2000-08-22
BR9708910A (pt) 1999-08-03
AU2645597A (en) 1997-11-26
PL329871A1 (en) 1999-04-12
CN1217750A (zh) 1999-05-26
EP0896626B1 (en) 2007-01-03
US6277599B1 (en) 2001-08-21
CA2250579A1 (en) 1997-11-13
ES2279539T3 (es) 2007-08-16
HUP9901562A2 (hu) 1999-08-30
AU719513B2 (en) 2000-05-11
EP0896626A1 (en) 1999-02-17
NO985120D0 (no) 1998-11-03
IL126772A0 (en) 1999-08-17
SK150298A3 (en) 1999-04-13
US6903203B2 (en) 2005-06-07

Similar Documents

Publication Publication Date Title
TR199802227T2 (xx) CEA'ya kar�� monoklonal antikor, bahsedilen antikoru i�eren konj�gatlar ve bunlar�n bir ADEPT siteminde terap�tik kullan�mlar�.
IL126314A0 (en) Monoclonal specific antibodies
Brown et al. Activation of antibody Fc function by antigen-induced conformational changes.
AU733544C (en) Treatment and diagnosis of cancer
Galloway et al. Tumor-associated antigens in spent medium of human melanoma cells: immunochemical characterization with xenoantisera.
DE3887675D1 (de) Antikörper.
Jiang et al. Photodynamic killing of human squamous cell carcinoma cells using a monoclonal antibody-photosensitizer conjugate
EP1064303A4 (en) MONOCLONAL ANTIBODIES SPECIFIC TO THE EXTRACELLULAR DOMAIN OF THE PROSTATE SPECIFIC MEMBRANEANT
PT721470E (pt) Anticorpos monoclonais para utilizacao em diagnostico e tratamento de cancro colorrectal
Brandtzaeg Studies on J chain and binding site for secretory component in circulating human B cells
EP0352722A3 (en) Adenocarcinoma antigen binding methods and reagents
Kyprianou et al. Development of optical immunosensors for detection of proteins in serum
CA2380066A1 (en) Antitumor antibodies, proteins, and uses thereof
Berki et al. Novel method for in vitro depletion of T cells by monoclonal antibody-targeted photosensitization
Mahmoudian et al. Conjugation of R-phycoerythrin to a polyclonal antibody and F (ab') 2 fragment of a polyclonal antibody by two different methods
Wood et al. Association between immunoglobulin and macrophages in primary methylcholanthrene-induced sarcomas
Papamichail et al. Lymphocyte binding of fluid phase mouse C3b
Yokota et al. Antigenic modulation and internalization of monoclonal antibody to human colonic carcinoma cells detected by enzyme‐linked immunosorbent assay
Mohanty et al. Cationic Peptide Conjugation Enhances Intratumoral Retention and Antitumor Efficacy of Immune Checkpoint Blockade Antibodies
Page et al. Drug targeting with monoclonal antibodies
Staneck et al. Characterization of an antiserum against human myeloma cells
RU95104325A (ru) Коньюгаты антител с улучшенными свойствами
Andtzaeg Studies on J chain and binding site for secretory component in circulating human B cells I. THE SURFACE MEMBRANE.
Rohanah Hussain et al. Immobilised and non-immobilised ligand interaction studies of monoclonal antibody BC--B containing fibronectin fragment.
Bloch et al. 599 Polyclonal hyperviscosity syndrome masking the presence of monoclonal IgG-anti IgG protein