ClinVar Miner

Submissions for variant NM_015074.3(KIF1B):c.1817C>T (p.Thr606Ile) (rs142881321)

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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Illumina Clinical Services Laboratory,Illumina RCV000397219 SCV000346616 uncertain significance Pheochromocytoma 2016-06-14 criteria provided, single submitter clinical testing
Illumina Clinical Services Laboratory,Illumina RCV000306544 SCV000346617 likely benign Neuroblastoma 2018-01-12 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease.
Invitae RCV000366147 SCV001218697 uncertain significance Charcot-Marie-Tooth disease, type 2 2019-06-18 criteria provided, single submitter clinical testing This sequence change replaces threonine with isoleucine at codon 606 of the KIF1B protein (p.Thr606Ile). The threonine residue is highly conserved and there is a moderate physicochemical difference between threonine and isoleucine. This variant is present in population databases (rs142881321, ExAC 0.02%), and has an allele count higher than expected for a pathogenic variant (PMID: 28166811). This variant has not been reported in the literature in individuals with KIF1B-related conditions. ClinVar contains an entry for this variant (Variation ID: 291552). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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.
Molecular Genetics Laboratory,London Health Sciences Centre RCV001174213 SCV001337340 uncertain significance Charcot-Marie-Tooth disease criteria provided, single submitter clinical testing

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