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Causes of death in X chromatin positive males (Klinefelter's syndrome)
Insights
Males with Klinefelter
Area of Science:
- Endocrinology
- Genetics
- Cardiovascular Medicine
Background:
- Klinefelter's syndrome (47,XXY) is associated with increased mortality.
- Previous studies indicate a 50% rise in overall mortality and a 5-year reduction in life expectancy.
- Understanding specific causes of death is crucial for improved patient management.
Purpose of the Study:
- To analyze the causes of death in a prospective cohort of 466 males with Klinefelter's syndrome.
- To identify specific disease risks contributing to reduced life expectancy.
Main Methods:
- Prospective study over 25 years.
- Analysis of mortality data in 466 males with X chromatin positive Klinefelter's syndrome.
Main Results:
- Increased mortality from cerebrovascular disease, particularly subarachnoid hemorrhage in younger individuals.
- Elevated risk of respiratory diseases in those with psychiatric hospital ascertainment.
- Significant, though small, numbers of deaths from breast carcinoma and aortic valve disease.
Conclusions:
- Klinefelter's syndrome is linked to specific increased mortality risks, including cerebrovascular and respiratory diseases.
- The risk of breast carcinoma in males with Klinefelter's syndrome may approach female rates.
- Further research into cardiovascular and endocrine management is warranted.
Abstract:
The causes of death in 466 X chromatin positive males (Klinefelter's syndrome) studied prospectively over the last 25 years have been analysed. We have previously reported the overall mortality to be increased by 50% and life expectancy reduced by about five years. A highly significant increase in mortality from cerebrovascular disease was observed in the sub group considered to be most representative of X chromatin positive males in general. In the age group up to 45 years this increase could be attributed to deaths from subarachnoid haemorrhage. An increase in mortality from respiratory diseases was observed in those ascertained in psychiatric hospitals. In the sample as a whole there were small but highly significant numbers of deaths from carcinoma of the breast and aortic valve disease. The deaths from carcinoma of the breast were comparable with those expected if female mortality rates were applied.