Biological Significance of the Bloom's Syndrome Protein

Since 1960, persons with the very rare disorder Bloom's syndrome (BS) have been followed clinically, documenting clinical matters as obtained from their doctors. This has been a worldwide search for cases, though a few in the New York City area are seen (personally, by us) perhaps once every 2-3 years. BS is a rare genetically-determined disorder described in NYC in 1954. The clinical courses of the 169 persons diagnosed BS by 1991 are followed in a program referred to as the Bloom's Syndrome Registry. BS is the prototype of the "chromosome-breakage syndromes." BS cells mutate at a greater rate than any other, and the consequence is the greatest known predisposition to cancers of the types that affect the general human population. We are defining the clinical syndrome and at the same time are studying cells from affected families in the experimental laboratory. BS is a model for learning about cancer. Our contact with families lets us know of cancers arising, but blood, and sometimes tiny biopsies of skin, is taken if available so that (a) the chromosomes can be studied and (b) the gene mutations can be defined in molecular terms.

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Key information

Conditions

Bloom Syndrome Abnormalities, Multiple Congenital Abnormalities Congenital, Hereditary, and Neonatal Diseases and Abnormalities DNA Repair-Deficiency Disorders Genetic Diseases, Inborn Immune System Diseases Immunologic Deficiency Syndromes Metabolic Diseases Nutritional and Metabolic Diseases Primary Immunodeficiency Diseases

Age range

2 year–55 year

Sex eligibility

All sexes

Study type

Observational

Primary location

New York Hospital-Cornell Medical Center

New York, 10021, United States

About this study

Although an occasional person with BS will be admitted to the hospital for special study (endocrine evaluation mainly)--two in the last 25 years--the Registry does not develop a doctor/patient relationship with affected persons. They have their own doctors. We gather information about the affected persons and publish reports. We also publish reports of experiments carried out in the research laboratory using BS cells. Because we are a central repository for information on BS, families or their physicians find contact with us beneficial, and we provide them with information requested. Sometimes pregnancies at risk occur, and we have on occasion made cytogenic (chromosome) analysis of cultured cells of amniotic fluid (the cultures being initiated elsewhere and sent to us for cytogenetic study).

Although the accessioning of new cases to the Registry was closed in 1991, 4-5 new patients are referred to us each year, and their clinical courses also are being followed. To date, the 169 officially registered and 36 additional cases are under our surveillance.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

families include those ascertained by physician referral and those families already accessioned to The Bloom's Syndrome Registry
the family has at least one affected member with BS

Sponsors and collaborators

Lead sponsor

National Center for Research Resources (NCRR)

Nih

Registry information

Important dates

First posted: Jul 13, 2001
Registry last updated: Jun 24, 2005

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed