ClinVar Miner

Submissions for variant NM_000391.4(TPP1):c.1116C>G (p.His372Gln)

gnomAD frequency: 0.00003  dbSNP: rs751321300
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000481665 SCV000568067 uncertain significance not provided 2018-11-19 criteria provided, single submitter clinical testing A variant of uncertain significance has been identified in the TPP1 gene. The H372Q variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The H372Q variant is not observed at a significant frequency in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The H372Q variant is a semi-conservative amino acid substitution, which may impact secondary protein structure as these residues differ in some properties. This substitution occurs at a position that is conserved in mammals. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant.
Invitae RCV000481665 SCV002264489 uncertain significance not provided 2022-07-26 criteria provided, single submitter clinical testing This sequence change replaces histidine, which is basic and polar, with glutamine, which is neutral and polar, at codon 372 of the TPP1 protein (p.His372Gln). This variant is present in population databases (rs751321300, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with TPP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 419889). 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) performed at Invitae indicates that this missense variant is not expected to disrupt TPP1 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. RCV001833610 SCV002094827 uncertain significance Neuronal ceroid lipofuscinosis 2 2019-11-11 no assertion criteria provided clinical testing

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