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    Lesch-Nyhan syndrome (LNS) is a rare X-linked inherited neurogenetic disorder of purine metabolism in which the enzyme, hypoxanthine-guanine phosphoribosyltransferase(HGprt) is defective. The authors report a novel mutation which led to LNS in a family with a deletion followed by an insertion (INDELS) via the serial replication slippage mechanism: c.428_432delTGCAGinsAGCAAA, p.Met143Lysfs*12 in exon 6 of HPRT1 gene. Molecular diagnosis discloses the genetic heterogeneity of HPRT1 gene responsible for HGprt deficiency. It allows fast, accurate carrier detection and genetic counseling.


    Khue Vu Nguyen, William L Nyhan. Lesch-Nyhan Syndrome in a Family with a Deletion Followed by an Insertion within the HPRT1 Gene. Nucleosides, nucleotides & nucleic acids. 2015;34(6):442-7

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    PMID: 25965333

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