(redirected from factor IX deficiency)
Also found in: Dictionary, Thesaurus, Medical, Financial, Encyclopedia.


An event, circumstance, influence, or element that plays a part in bringing about a result.

A factor in a case contributes to its causation or outcome. In the area of Negligence law, the factors, or chain of causation, are important in determining whether liability ensues from a particular action done by the defendant.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.


n. 1) a salesman who sells in his/her own name on behalf of others, taking a commission for services. 2) something that contributes to the result.

Copyright © 1981-2005 by Gerald N. Hill and Kathleen T. Hill. All Right reserved.


1 a mercantile agent. An agent who is in the ordinary course of business entrusted with goods or documents of title representing goods with a view to their sale. A factor has a lien over goods entrusted to him; this lien covers any claims he may have against his principal arising out of the agency. Most factors will be mercantile agents (and have the powers of such) for the purposes of the Factors Act 1889. Under this Act, in certain circumstances a factor may pass a good title to goods entrusted to him.
2 an institution to whom a company assigns its book debts (see FACTORING).
3 in Scotland a landlord or superior's agent.
Collins Dictionary of Law © W.J. Stewart, 2006
References in periodicals archive ?
Haemophilia B is an X-linked chronic coagulation disorder which is characterized by factor IX deficiency. The severity of the disease is related to the antigen levels and coagulant activity of factor IX.
Among the coagulation protein defects vWD is the most common affecting 1-4% of the population whereas the incidence of factor VIII deficiency is 1 in 10,000 and that of factor IX deficiency is 1 in 50,0003,4.
Although his coagulation values had been normal prior to surgery, detailed laboratory tests revealed that he had a mild factor IX deficiency (activity: 41%).
Factor IX deficiency affects roughly 15,000 patients in the United States, Europe, Canada and Japan with an annual cost of treatment with recombinant or plasma-derived factor IX approaching $400 million.
Hemophilia comes in two varieties, Hemophilia A (Factor VIII deficiency affecting approximately 13,321 individuals in the United States) and Hemophilia B (Factor IX deficiency affecting approximately 3,638 individuals).
On December 7, 1995, a 15-year-old boy with severe hemophilia B (factor IX deficiency) presented to his physician with symptoms of acute hepatitis; diagnostic studies indicated elevated liver enzymes and a positive test for IgM anti-HAV.