期刊
INTRACTABLE & RARE DISEASES RESEARCH
卷 11, 期 3, 页码 113-119出版社
INT RESEARCH & COOPERATION ASSOC BIO & SOCIO-SCIENCES ADVANCEMENT
DOI: 10.5582/irdr.2022.01060
关键词
smooth muscle motility disorders; chronic intestinal pseudo-obstruction; megacystis; ACTG2; MYH11; FLNA; MYLK; RAD21; MYL9; LMOD1; mutations
This study systematically reviewed the genes associated with smooth muscle disorders affecting the intestine and the bladder. The most commonly involved genes were ACTG2, MYH11, and FLNA, and the clinical phenotypes of the patients ranged from isolated chronic intestinal pseudo-obstruction to isolated megacystis or combined CIPO and megacystis.
Smooth muscle disorders affecting both the intestine and the bladder have been known for a decade. However, the recent discovery of genes associated with these dysfunctions has led to the description of several clinical phenotypes. We performed a systematic review of all published cases involving seven genes with pathogenic variants, ACTG2, MYH11, FLNA, MYLK, RAD21, MYL9 and LMOD1, and included 28 articles describing 112 patients and 5 pregnancies terminated before birth. The most commonly described mutations involved ACTG2 (75/112, 67% of patients), MYH11 (14%) and FLNA (13%). Twenty-seven patients (28%) died at a median age of 14.5 months. Among the 76 patients for whom this information was available, 10 (13%) had isolated chronic intestinal pseudo-obstruction (CIPO), 17 (22%) had isolated megacystis, and 48 (63%) had combined CIPO and megacystis. The respective proportions of these phenotypes were 9%, 20% and 71% among the 56 patients with ACTG2 mutations, 20%, 20% and 60% among the 10 patients with MYH11 mutations and 50%, 50% and 0% among the 7 patients with FLNA mutations.
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