RT Journal Article SR Electronic T1 Two sisters with mental retardation, cataract, ataxia, progressive hearing loss, and polyneuropathy. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 884 OP 885 DO 10.1136/jmg.28.12.884 VO 28 IS 12 A1 J H Begeer A1 F A Scholte A1 A J van Essen YR 1991 UL http://jmg.bmj.com/content/28/12/884.abstract AB Two sisters are described with a disorder characterised by mental retardation, congenital cataract, progressive spinocerebellar ataxia, sensorineural deafness, and signs of peripheral neuropathy. Progressive hearing loss, ataxia, and polyneuropathy became evident in the third decade. The differential diagnosis of this syndrome is discussed including the syndromes described by Berman et al and Koletzko et al.