ClinVar Miner

Submissions for variant NM_000074.3(CD40LG):c.773T>C (p.Leu258Ser)

dbSNP: rs1569377884
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000690645 SCV000818342 uncertain significance Hyper-IgM syndrome type 1 2018-06-29 criteria provided, single submitter clinical testing In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Experimental studies have shown that cells carrying this missense change express CD40L protein, but that it does not bind CD40-Ig (PMID: 9746782). This variant is not present in population databases (ExAC no frequency). This sequence change replaces leucine with serine at codon 258 of the CD40LG protein (p.Leu258Ser). The leucine residue is highly conserved and there is a large physicochemical difference between leucine and serine. This variant has been observed in several families affected with hyper IgM syndrome, however, clinical details for these families were not provided (PMID: 9746782).

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