ClinVar Miner

Submissions for variant NM_004370.6(COL12A1):c.741T>G (p.Ile247Met)

gnomAD frequency: 0.00004  dbSNP: rs371124522
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000697672 SCV000826297 uncertain significance Ullrich congenital muscular dystrophy 2; Bethlem myopathy 2 2023-12-12 criteria provided, single submitter clinical testing This sequence change replaces isoleucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 247 of the COL12A1 protein (p.Ile247Met). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with COL12A1-related conditions. ClinVar contains an entry for this variant (Variation ID: 575452). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on COL12A1 protein function. 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.
Ambry Genetics RCV003303157 SCV004000666 uncertain significance Inborn genetic diseases 2023-04-18 criteria provided, single submitter clinical testing The c.741T>G (p.I247M) alteration is located in exon 7 (coding exon 6) of the COL12A1 gene. This alteration results from a T to G substitution at nucleotide position 741, causing the isoleucine (I) at amino acid position 247 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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