Rodzinne występowanie zespołu Marinesco – Sjögrena (opis przypadku występowania rzadkiego zespołu u rodzeństwa)

Abstract

Marinesco-Sjögren syndrome (MSS) is a rare malformation syndrome inherited in an autosomal recessive manner. The most typical features are cerebellar ataxia with cerebellar atrophy, dysarthria, nystagmus, early-onset cataract, myopathy, hypotonia and muscle weakness. Additional symptoms often include psychomotor delay, hypergonadotropic hypogonadism and short stature. We present a case of a 6-year-old boy admitted to the Department due to psychomotor developmental retardation for completion of further diagnostics. Initial diagnostics led to a preliminary diagnosis of Marinesco-Sjögren syndrome, ultimately confirmed by genetic testing. When the patient’s younger brother was born, he presented with similar symptoms. Knowledge of his older sibling’s diagnosis aided in immediately using single- -gene testing to confirm the presence of two mutated copies of the SIL1 gene. This finding allowed to establish a proper diagnosis in the younger brother, leading to immediate multi-specialist intervention.