ClinVar Miner

Submissions for variant NM_023110.3(FGFR1):c.1271G>A (p.Arg424His)

gnomAD frequency: 0.00003  dbSNP: rs183376882
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003786770 SCV004573317 uncertain significance Hypogonadotropic hypogonadism 2 with or without anosmia; Pfeiffer syndrome 2024-12-03 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 424 of the FGFR1 protein (p.Arg424His). This variant is present in population databases (rs183376882, gnomAD 0.02%). This missense change has been observed in individuals with Kallmann syndrome (PMID: 33548149). ClinVar contains an entry for this variant (Variation ID: 2927948). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt FGFR1 protein function with a negative predictive value of 80%. This variant disrupts the p.Arg424 amino acid residue in FGFR1. Other variant(s) that disrupt this residue have been observed in individuals with FGFR1-related conditions (PMID: 33548149, 37805574), which suggests that this may be a clinically significant amino acid residue. 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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