"Christmas Disease"

Researchers in San Francisco, New York, and Oxford describe a new type of hemophilia, arising from a defect in what is now known as factor IX (9). Rosemary Biggs from Oxford, UK, named it Christmas disease, after the first patient, Stephen Christmas.

Roman Numerals

The International Committee for the Nomenclature of Blood Clotting Factors was established with one of its primary objectives the development of a common scientific terminology. The committee consisted of 23 members from 15 countries, all of whom  played significant roles in the discovery or application of knowledge regarding these factors.

Factor XII

Factor XII (also called Hageman factor) was first discovered in 1955 when a routine blood sample of  a man named John Hageman  had  prolonged clotting time in test tubes. Hageman was then examined by hematologist Oscar Ratnoff, who found that Hageman lacked a previously unidentified clotting factor, even though he had no hemorrhagic symptoms.

Christmas Disease

Hemophilia B is first referred to as "Christmas Disease" in a 1952 edition of the British Medical Journal. The condition was dubbed with the name not for the article's publication during the holiday season, but after it focused on a then five-year-old boy named Stephen Christmas.

Study Concludes

A 10-year study on joint damage run by NHF medical trustee Henry H. Jordan concludes. A few years later, Henry would publish a monograph on his findings involving 56 hemophilia patients.

Orthopedic Study

In 1946, Dr. Henry Jordan, a surgeon and medical trustee of NHF, began a program for the orthopedic treatment of hemophilia patients. The study was funded and conducted in cooperation with NHF, and was run out of Lenox Hill Hospital in New York City. The study included 110 patients and ran through 1956.

CHAMPS

As part of the Hemophilia Inhibitor Study (HIRS), CDC gene sequences and develops a comprehensive list (CDC Hemophilia A and Hemophilia B Mutation Project known as CHAMPS) of the thousands of gene variants (or differences) that have been reported to cause hemophilia.

Study Results

Results from CDC’s Hemophilia Inhibitor Research Study (HIRS), a pilot surveillance project conducted at CDC from 2006–2009, are published in the Journal of Thrombosis and Haemostasis. The findings from this project led to a modified testing method for inhibitors (antibodies) to hemophilia factor-replacement treatment products.

VWD & Women

Results of a CDC survey of women with von Willebrand disease (VWD), published in Haemophilia, find that there is an average of 16 years between the onset of symptoms and diagnosis of a bleeding disorder, pointing to the need for timely referral by gynecologists and other providers to a Hemophilia Treatment Center (HTC) and specialty testing by trained lab personnel to ensure proper diagnosis and treatment.

Prophy Adoption

Based on the published results of a clinical trial, prophylactic (preventative) treatment becomes the standard of care in the United States for people with hemophilia in an effort to decrease the frequency and occurrence of bleeds, and thus, prevent joint damage.

HIRS Study

CDC initiates the Hemophilia Inhibitor Research Study (HIRS). Results of this study have been crucial in understanding which hemophilia patients are at highest risk of developing inhibitors (antibodies) that reduce the effectiveness of their treatment products.

Blood Safety Update

An assessment of data from CDC’s Universal Data Collection (UDC) system, published in Morbidity and Mortality Weekly Report (MMWR), demonstrates that since 1998, no new infections of hepatitis A, B, and C or HIV have been linked to blood products used to treat hemophilia.

Gene Therapy

W. French Anderson and his colleagues at the NIH perform the first approved gene therapy procedure on a four-year-old girl born with severe combined immunodeficiency.

HCV

The HCV is first identified; it soon becomes clear that an even higher proportion of people with hemophilia have been exposed to this virus, which can result in chronic liver disease.

Gene Isolation

Isolation of the genes controlling factor VII and von Willebrand's factor production. (Factor VII deficiency results in a rare form of hemophilia, but also may have broad applications in treating more common forms of hemophilia.)

LAV to HIV

CDC Morbidity and Mortality Weekly Report (MMWR) reported 72% of severe asymptomatic hemophiliac had antibody to LAV antigens using the Western blot test. This virus is now known to be a member of the HIV-1 group of viruses.

DDAVP

DDAVP is declared by researchers to be a useful alternative to blood components in moderate hemophilia A and Von Willebrand disease.

FDA Clinical Trial History

In 1977, the FDA issued a guideline banning most women of "childbearing potential" from participating in clinical research studies. This was the result of certain drugs (most notably thalidomide) causing serious birth defects. At the time, the focus was on protecting the most vulnerable populations at all other costs.

HTC History

In 1976, the Children’s Hospital Los Angeles Hemophilia Treatment Center is established. It is one of the first Hemophilia Treatment Centers in the United States. The Center is originally called the Hemophilia Comprehensive Care Center.

Cryo Discovery

Dr. Judith Graham Pool publishes a paper that notes her discovery that slowly-thawed frozen plasma yields deposits high in Factor VIII. These deposits, called cryoprecipitates - or cryo -, are found to have much greater clotting power than plasma and are given to hemophiliacs to stop bleeding episodes.

Plasma Fractionation

Edwin Cohn from Harvard University develops “plasma fractionation” in order to prepare products such as albumin and IgG for the blood volume expander. Nowadays, most of the modern human plasma fractionation industries are based on Cohn’s method.