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  • Title: Compound Heterozygous Myosin 5B (Myo5b) Mutation with Early Onset Progressive Cholestasis and No Intestinal Failure.
    Author: Vij M, Shah V.
    Journal: Fetal Pediatr Pathol; 2022 Oct; 41(5):811-817. PubMed ID: 34338607.
    Abstract:
    Background: Exome sequencing studies have recently identified novel genes implicated in normal or low GGT pediatric cholestasis including myosin 5B (MYO5B). Case report: We identified novel compound heterozygote mutations in exon 14 and exon 19 of the MYO5B gene in an 18-month-old Indian child with history of fluctuating jaundice and severe pruritus. His liver biopsy showed portal and perivenular fibrosis with focal bridging septa and mild activity. He is currently on UDCA, cholestyramine and vitamin supplements. There is no history of diarrhea. His asymptomatic mother showed heterozygous mutation in exon 19 of the MYO5B gene and his asymptomatic father showed heterozygous mutation in exon 14 of the MYO5B gene. Conclusion: Our report confirms that patients with compound heterozygote mutations in MYO5B develop progressive cholestasis with no intestinal disease.
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