ClinVar Miner

Submissions for variant NM_000142.5(FGFR3):c.1267G>C (p.Val423Leu)

gnomAD frequency: 0.00002  dbSNP: rs1256546303
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV002236439 SCV002507620 uncertain significance not provided 2023-08-23 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 423 of the FGFR3 protein (p.Val423Leu). This variant is present in population databases (no rsID available, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with FGFR3-related conditions. ClinVar contains an entry for this variant (Variation ID: 1680065). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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.
Fulgent Genetics, Fulgent Genetics RCV002481042 SCV002784096 uncertain significance Achondroplasia; Camptodactyly-tall stature-scoliosis-hearing loss syndrome; Cervical cancer; Crouzon syndrome-acanthosis nigricans syndrome; Levy-Hollister syndrome; Muenke syndrome; Thanatophoric dysplasia type 1; Thanatophoric dysplasia, type 2; Malignant tumor of urinary bladder; Hypochondroplasia; Epidermal nevus; Severe achondroplasia-developmental delay-acanthosis nigricans syndrome; Colorectal cancer; Germ cell tumor of testis 2021-08-31 criteria provided, single submitter clinical testing
Ambry Genetics RCV003101303 SCV003716213 uncertain significance Inborn genetic diseases 2021-04-09 criteria provided, single submitter clinical testing The c.1267G>C (p.V423L) alteration is located in exon 10 (coding exon 9) of the FGFR3 gene. This alteration results from a G to C substitution at nucleotide position 1267, causing the valine (V) at amino acid position 423 to be replaced by a leucine (L). Based on data from the Genome Aggregation Database (gnomAD) database, the FGFR3 c.1267G>C alteration was observed in 0.0006% (1/156132) of total alleles studied. The p.V423 amino acid is conserved in available vertebrate species. The in silico prediction for the p.V423L alteration is inconclusive. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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