Age of onset in familial cancer

Age of onset in familial cancer.

BACKGROUND Reliable estimates on the age of onset between familial and sporadic cancers are important for etiological understanding and clinical practice. Specific studies on the age of onset of familial cancer compared with sporadic cancer are less common than studies on familial risks and these are almost lacking for rare cancers. MATERIALS AND METHODS The Swedish Family-Cancer Database was...

Testing for familial correlation in age-at-onset.

The analysis of family-study data sometimes focuses on whether a dichotomous trait tends to cluster in families. For traits with variable age-at-onset, it may be of interest to investigate whether age-at-onset itself also exhibits familial clustering. A complication in such investigations is that censoring by age-at-ascertainment can induce artifactual familial correlation in the age-at-onset o...

Familial Mediterranean fever with onset at 66 years of age.

The patient was a 68-year-old woman who had experienced recurrent febrile episodes since 66 years of age. Despite various examinations and treatments, the etiology remained unclear. Further examinations following another referral failed to uncover the cause. Therefore, despite her age, it was presumed that she had familial Mediterranean fever. An analysis of the familial Mediterranean fever (ME...

Predicting age of onset in familial essential tremor: how much does age of onset run in families?

BACKGROUND The extent to which age of onset of essential tremor (ET) aggregates in families is unknown; hence, it is unclear whether information about the age of onset in one family member can be used to predict the age of onset in others. METHODS ET probands and relatives were enrolled in a genetic study at Columbia University. RESULTS Data from 26 probands and 52 relatives were analyzed. ...

Familial correlations for age at onset and age at death in Huntington's disease.