Complex sentence: Marinesco-Sjogren syndrome (MSS) is a rare autosomal recessive disorder causing cerebellar ataxia (balance and coordination problems), cataracts in early childhood, and muscle weakness.
Split into simpler sentences: Marinesco-Sjogren syndrome (MSS) is a rare autosomal recessive disorder. It causes cerebellar ataxia (balance and coordination problems), cataracts in early childhood, and muscle weakness.