Familial progressive systemic scleroderma

Area of Science:

• Genetics
• Rheumatology
• Epidemiology

Background:

• Progressive systemic scleroderma is a complex autoimmune disease with a poorly understood hereditary component.
• Familial cases of scleroderma are rare, making the investigation of genetic factors challenging.
• The Brandywine triracial isolate, a highly inbred community, presents a unique population for studying genetic predispositions.

Purpose of the Study:

• To investigate the occurrence and potential genetic factors of progressive systemic scleroderma within the Brandywine triracial isolate.
• To assess the mortality rate of scleroderma in this isolate compared to the general population.

Main Methods:

• Case study of three patients from the Brandywine triracial isolate presenting with scleroderma.
• Analysis of clinical manifestations including skin changes, Raynaud phenomenon, and organ involvement.
• Comparison of scleroderma mortality rates between the isolate and the general population.

Main Results:

• Two of the three patients, a father and son, exhibited similar clinical features of scleroderma.
• The observed mortality rate for scleroderma in the Brandywine isolate was at least 250 times higher than in the general population.
• The isolate has high gene frequencies for sickle cell anemia and oculocutaneous albinism, indicating a history of inbreeding.

Conclusions:

• The high mortality rate and familial occurrence suggest a probable genetic predisposition for scleroderma in the Brandywine triracial isolate.
• Further research into the genetic basis of scleroderma within this population is warranted.
• This isolate serves as a valuable resource for understanding the hereditary aspects of scleroderma.