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December 1958

Multiple Sclerosis in Twins and Their RelativesPreliminary Report on a Genetic and Clinical Study

AMA Arch NeurPsych. 1958;80(6):667-674. doi:10.1001/archneurpsyc.1958.02340120003001
Abstract

The increasing search for the causes of multiple sclerosis has led in the past two decades to a close reexamination of the old idea that constitutional or genetic factors may play some role in the etiology of this disease. The evidence currently presented for or against a hereditary background for multiple sclerosis comes chiefly from three sources: (a) reports in the literature of more than one case in a family; (b) genetic studies involving the relatives of patients with the disease, and (c) observations of twin cases.

During the past 60 years instances of more than one case in a family have been reported with increasing frequency.1 The genetic studies were initiated, so to speak, by the pioneering work of Curtius2 and Curtius and Speer.3 Three or four other genetic studies followed. Findings in these studies do not differ greatly from one another and are summarized in

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