Submissions for variant NM_001540.5(HSPB1):c.305A>T (p.Asn102Ile) (rs765142574)

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Total submissions: 2

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Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
Athena Diagnostics Inc	RCV000517465	SCV000613671	uncertain significance	not specified	2016-10-17	criteria provided, single submitter	clinical testing
Invitae	RCV000641082	SCV000762700	uncertain significance	Charcot-Marie-Tooth disease type 2F	2017-08-21	criteria provided, single submitter	clinical testing	This sequence change replaces asparagine with isoleucine at codon 102 of the HSPB1 protein (p.Asn102Ile). The asparagine residue is highly conserved and there is a large physicochemical difference between asparagine and isoleucine. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with HSPB1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). 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.

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