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| Primary information |
|---|
| ID | 10174 |
| Therapeutic ID | Th1022 |
| Protein Name | Antihemophilic Factor |
| Sequence | >Th1022_Antihemophilic_Factor
MQIELSTCFFLCLLRFCFSATRRYYLGAVELSWDYMQSDLGELPVDARFPPRVPKSFPFNTSVVYKKTLFVEFTVHLFNIAKPRPPWMGLLGPTIQAEVYDTVVITLKNMASHPVSLHAVGVSYWKASEGAEYDDQTSQREKEDDKVFPGGSHTYVWQVLKENGPMASDPLCLTYSYLSHVDLVKDLNSGLIGALLVCREGSLAKEKTQTLHKFILLFAVFDEGKSWHSETKNSLMQDRDAASARAWPKMHTVNGYVNRSLPGLIGCHRKSVYWHVIGMGTTPEVHSIFLEGHTFLVRNHRQASLEISPITFLTAQTLLMDLGQFLLFCHISSHQHDGMEAYVKVDSCPEEPQLRMKNNEEAEDYDDDLTDSEMDVVRFDDDNSPSFIQIRSVAKKHPKTWVHYIAAEEEDWDYAPLVLAPDDRSYKSQYLNNGPQRIGRKYKKVRFMAYTDETFKTREAIQHESGILGPLLYGEVGDTLLIIFKNQASRPYNIYPHGITDVRPLYSRRLPKGVKHLKDFPILPGEIFKYKWTVTVEDGPTKSDPRCLTRYYSSFVNMERDLASGLIGPLLICYKESVDQRGNQIMSDKRNVILFSVFDENRSWYLTENIQRFLPNPAGVQLEDPEFQASNIMHSINGYVFDSLQLSVCLHEVAYWYILSIGAQTDFLSVFFSGYTFKHKMVYEDTLTLFPFSGETVFMSMENPGLWILGCHNSDFRNRGMTALLKVSSCDKNTGDYYEDSYEDISAYLLSKNNAIEPRSFSQNSRHPSTRQKQFNATTIPENDIEKTDPWFAHRTPMPKIQNVSSSDLLMLLRQSPTPHGLSLSDLQEAKYETFSDDPSPGAIDSNNSLSEMTHFRPQLHHSGDMVFTPESGLQLRLNEKLGTTAATELKKLDFKVSSTSNNLISTIPSDNLAAGTDNTSSLGPPSMPVHYDSQLDTTLFGKKSSPLTESGGPLSLSEENNDSKLLESGLMNSQESSWGKNVSSTESGRLFKGKRAHGPALLTKDNALFKVSISLLKTNKTSNNSATNRKTHIDGPSLLIENSPSVWQNILESDTEFKKVTPLIHDRMLMDKNATALRLNHMSNKTTSSKNMEMVQQKKEGPIPPDAQNPDMSFFKMLFLPESARWIQRTHGKNSLNSGQGPSPKQLVSLGPEKSVEGQNFLSEKNKVVVGKGEFTKDVGLKEMVFPSSRNLFLTNLDNLHENNTHNQEKKIQEEIEKKETLIQENVVLPQIHTVTGTKNFMKNLFLLSTRQNVEGSYEGAYAPVLQDFRSLNDSTNRTKKHTAHFSKKGEEENLEGLGNQTKQIVEKYACTTRISPNTSQQNFVTQRSKRALKQFRLPLEETELEKRIIVDDTDTQWSKNMKHLTPSTLTQIDYNEKEKGAITQSPLSDCLTRSHSIPQANRSPLPIAKVSSFPSIRPIYLTRVLFQDNSSHLPAASYRKKDSGVQESSHFLQGAKKNNLSLAILTLEMTGDQREVGSLGTSATNSVTYKKVENTVLPKPDLPKTSGKVELLPKVHIYQKDLFPTETSNGSPGHLDLVEGSLLQGTEGAIKWNEANRPGKVPFLRVATESSAKTPSKLLDPLAWDNHYGTQIPKEEWKSQEKSPEKTAFKKKDTILSLNACESNHAIAAINEGQNKPEIEVTWAKQGRTERLCSQNPPVLKRHQREITRTTLQSDQEEIDYDDTISVEMKKEDFDIYDEDENQSPRSFQKKTRHYFIAAVERLWDYGMSSSPHVLRNRAQSGSVPQFKKVVFQEFTDGSFTQPLYRGELNEHLGLLGPYIRAEVEDNIMVTFRNQASRPYSFYSSLISYEEDQRQGAEPRKNFVKPNETKTYFWKVQHHMAPTKDEFDCKAWAYFSDVDLEKDVHSGLIGPLLVCHTNTLNPAHGRQVTVQEFALFFTIFDETKSWYFTENMERNCRAPCNIQMEDPTFKENYRFHAINGYIMDTLPGLVMAQDQRIRWYLLSMGSNENIHSIHFSGHVFTVRKKEEYKMALYNLYPGVFETVEMLPSKAGIWRVECLIGEHLHAGMSTLFLVYSNKCQTPLGMASGHIRDFQITASGQYGQWAPKLARLHYSGSINAWSTKEPFSWIKVDLLAPMIIHGIKTQGARQKFSSLYISQFIIMYSLDGKKWQTYRGNSTGTLMVFFGNVDSSGIKHNIFNPPIIARYIRLHPTHYSIRSTLRMELMGCDLNSCSMPLGMESKAISDAQITASSYFTNMFATWSPSKARLHLQGRSNAWRPQVNNPKEWLQVDFQKTMKVTGVTTQGVKSLLTSMYVKEFLISSSQDGHQWTLFFQNGKVKVFQGNQDSFTPVVNSLDPPLLTRYLRIHPQSWVHQIALRMEVLGCEAQDLY
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| Molecular Weight | 264725.5 |
| Chemical Formula | C11794H18314N3220O3553S83 |
| Isoelectric Point | 6.97 |
| Hydrophobicity | -0.533 |
| Melting point | NA |
| Half-life | 8.4-19.3 hours |
| Description | Human recombinant antihemophilic factor or Factor VIII of 2332 residues(glycosylated) is produced by CHO cells. |
| Indication/Disease | For the treatment of hemophilia A, von Willebrand disease and Factor XIII deficiency. |
| Pharmacodynamics | Antihemophilic Factor binds factor IXa along with calcium and phospholipid, this complex converts factor X to factor Xa to facilitate clotting cascade. |
| Mechanism of Action | Antihemophilic factor is a protein found in normal plasma which is necessary for clot formation. The administration of AHF provides an increase in plasma levels of AHF and can temporarily correct the coagulation defect of patients with hemophilia A. |
| Toxicity | The highest toxicity is the risk of viral hepatitis transmition as well as intravascular hemolyisis can occur if large or frequent doses are used in blood groups A, B or AB |
| Metabolism | The metabolism of the human antihemophilic factor is identical to the normal inactivation and elimination pathway of the natural coagulation factor VIII. After activation, the human antihemophilic factor gets metabolized by activated protein C in R336 and R562 and this action inactivates this cofactor. The proteolysis generates two major fragments which are recognized by an anti-factor VIII A2 domain antibody. This process is followed by a further degradation into smaller fragments |
| Absorption | After intravenous administration of the human antihemophilic factor the values of Cmax, AUC and Tmax were 100 IU/ml, 1450 IU h/ml and 0.43 h respectively. In a second clinical trial, the treatment was administered for six months and the values of Cmax, AUC and Tmax were 99 units/ 100 ml, 1471 units h/ 100ml and 16 h, respectively. |
| The central and peripheral volume of distribution in adults weight an average of 68 kg were 2.81 L and 1.90 L respectively. |
| Clearance | 0.15 L/h |
| Categories | Amino Acids, Peptides, and Proteins, Biological Factors, Blood and Blood Forming Organs, Blood Coagulation Factors, Blood Proteins, Carbohydrates, Disaccharides, Hemophilia A, Hemostatics, Human Antihemophilic Factor, Increased Coagulation Activity, Oligosaccharides, Polysaccharides, Protein Precursors, Proteins |
| Patents Number | NA |
| Date of Issue | NA |
| Date of Expiry | NA |
| Drug Interaction | NA |
| Target | NA |
| Brand Name | ReFacto |
| Company | NA |
| Brand Description | NA |
| Prescribed For | To control and prevent hemorrhagic episodes and for surgical prophylaxis in patients with hemophilia A. ReFacto is indicated for short-term routine prophylaxis to reduce the frequency of spontaneous bleeding episodes |
| Chemical Name | NA |
| Formulation | It is available in single-use vials containing the labeled amount of factor VIII activity. Each vial contains nominally 250, 500, 1000 or 2000 IU of ReFacto (antihemophilic factor) per vial. The formulated product is a clear colorless solution upon recons |
| Physical Appearance | Lyophilized powder |
| Route of Administration | Intravenous Injection |
| Recommended Dosage | Required units = body weight (kg)x desired factor VIII rise (IU/dL or % of normal)x 0.5 (IU/kg per IU/dL) |
| Contraindication | Known hypersensitivity to mouse or hamster proteins |
| Side Effects | Chest pain; easy bruising, increased bleeding episodes; or bleeding from a wound or where the medicine was injected. |
| Useful Link 1 | Link |
| Useful Link 2 | NA |
| Remarks | NA |