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Article
September 1996

Familial Uveal Melanoma, IIIIs the Occurrence of Familial Uveal Melanoma Coincidental?

Author Affiliations

From the Oncology Service (Drs Singh, C. L. Shields, De Potter, and J. A. Shields) and Research Department (Drs Wang and Donoso), Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pa, and Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, Ohio (Dr Elston and Ms Fijal). Dr Singh is now with the Department of Veterans Affairs Health Center Eye Clinic, Gainesville, Fla.

Arch Ophthalmol. 1996;114(9):1101-1104. doi:10.1001/archopht.1996.01100140303008
Abstract

Objective:  To ascertain whether the familial occurrence of uveal melanoma was coincidental in kindreds in which 1 first-degree relative of the proband had also been affected with primary uveal melanoma.

Patients:  In a series of 4500 patients with primary uveal melanoma, 17 kindreds were identified in which a first-degree degree relative of the proband had also been affected with primary uveal melanoma.

Design:  In the 17 families in which a first-degree relative of the proband had been affected, primary uveal melanoma was classified as familial. In the remaining 4483 families, primary uveal melanoma was classified as sporadic. The expected number of affected first-degree relatives of probands for a family was estimated, assuming an incidence rate of 6 cases per million population per year in each type of family.

Results:  The expected number of affected first-degree relatives was calculated to be 0.81, with an SE of 0.08, compared with 17 observed affected first-degree relatives (P<.001).

Conclusion:  Our study provides strong statistical evidence that occurrence of familial uveal melanoma is not coincidental.

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