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Sarcoidosis is a multisystemic granulomatous disease of unknown etiology and is uncommon in Taiwan. No cases of familial sarcoidosis have been reported in Taiwan. In this article, we report a mother and son pair who had sarcoidosis. The 56-year-old mother sought medical help for chronic cough for 3 months in 1993. Enlarged mediastinal lymph nodes were demonstrated on chest computed tomography. Besides, two small erythematous papules on her face were observed. Mediastinoscopic biopsy and skin biopsy showed non-caseating granulomatous inflammation. Sarcoidosis was thus diagnosed. The human leukocyte antigen (HLA)-typing of the patient was HLA-A2, A11, B35, B39, CW4, CW7, DR8 and DQ6. Eleven years later, her son was also diagnosed with sarcoidosis proved by mediastinoscopic biopsy. His HLA-typing was HLA-A2, A24, B39, B48, CW7, CW8, DR8 and DQ6. This is the first report of familial sarcoidosis in Chinese people. More cases are needed for further investigation of genetic predisposition among Chinese people.