ClinVar Miner

Submissions for variant NM_000156.6(GAMT):c.415C>T (p.Leu139Phe)

gnomAD frequency: 0.00002  dbSNP: rs1300612017
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000693034 SCV000820888 uncertain significance Cerebral creatine deficiency syndrome 2022-09-16 criteria provided, single submitter clinical testing This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 139 of the GAMT protein (p.Leu139Phe). This variant is present in population databases (no rsID available, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with GAMT-related conditions. ClinVar contains an entry for this variant (Variation ID: 571798). 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 GAMT 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.
Natera, Inc. RCV001830513 SCV002087031 uncertain significance Deficiency of guanidinoacetate methyltransferase 2019-10-28 no assertion criteria provided clinical testing

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