Related Experiment Videos
Genetic susceptibility of benign prostatic hyperplasia
M G Sanda1, T H Beaty, R E Stutzman
1Brady Urological Institute, School of Public Health, Baltimore, Maryland.
The Journal of Urology
|July 1, 1994
Summary
A family history of benign prostatic hyperplasia (BPH) significantly increases risk, suggesting a genetic predisposition. Early-onset BPH may be inherited in an autosomal dominant pattern, guiding future genetic research.
Area of Science:
- Urology
- Genetics
- Epidemiology
Background:
- Benign prostatic hyperplasia (BPH) is a common condition in aging men.
- Early age of onset for BPH can indicate a hereditary component.
- Understanding the genetic factors in BPH etiology is crucial for developing targeted therapies.
Purpose of the Study:
- To investigate the role of genetic factors in the etiology of benign prostatic hyperplasia (BPH).
- To determine if early-onset BPH exhibits familial aggregation suggestive of genetic inheritance.
- To explore potential inheritance patterns for a predisposition to BPH.
Main Methods:
- A case-control study was conducted using 909 prostatectomy patients for BPH.
- Case probands were men in the youngest quartile (<64 years) with large prostates (>37 gm).
- Control probands were women whose spouses underwent prostatectomy; segregation analysis was performed.
Main Results:
- Male relatives of early-onset BPH cases had a 66% cumulative lifetime risk of prostatectomy for BPH versus 17% in controls (p=0.001).
- Relatives of affected men showed a 4-fold increased risk (p=0.0003), with brothers having a 6-fold increase (p=0.0089).
- Segregation analysis indicated that Mendelian dominant inheritance best explained the familial aggregation of BPH.
Conclusions:
- Family history of BPH is a significant risk factor for developing the condition.
- A predisposing gene associated with early-onset BPH is suggested.
- Evidence supports dominant Mendelian transmission, providing a basis for further genetic characterization of BPH.