Total submissions: 7
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Ambry Genetics | RCV000165537 | SCV000216269 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-05-21 | criteria provided, single submitter | clinical testing | The p.V201L variant (also known as c.601G>C), located in coding exon 8 of the MLH1 gene, results from a G to C substitution at nucleotide position 601. The valine at codon 201 is replaced by leucine, an amino acid with highly similar properties. This alteration has been reported as a variant of unknown significance in a cohort of patients with pancreatic ductal adenocarcinoma (Grant RC et al. Gastroenterology, 2015 Mar;148:556-64). This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |
Gene |
RCV000221109 | SCV000279077 | uncertain significance | not provided | 2021-11-10 | criteria provided, single submitter | clinical testing | Not observed at significant frequency in large population cohorts (Lek 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in individuals with a personal or family history including pancreatic cancer (Grant 2015); This variant is associated with the following publications: (PMID: 22753075, 25479140) |
Invitae | RCV000472998 | SCV000543601 | uncertain significance | Hereditary nonpolyposis colorectal neoplasms | 2023-11-17 | 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 201 of the MLH1 protein (p.Val201Leu). This variant is present in population databases (rs534184145, gnomAD 0.0009%). This missense change has been observed in individual(s) with pancreatic cancer (PMID: 25479140). ClinVar contains an entry for this variant (Variation ID: 186017). 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 MLH1 protein function with a negative predictive value of 95%. 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. |
Counsyl | RCV000663069 | SCV000786136 | uncertain significance | Colorectal cancer, hereditary nonpolyposis, type 2 | 2018-03-06 | criteria provided, single submitter | clinical testing | |
Color Diagnostics, |
RCV000165537 | SCV000911476 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-11-15 | criteria provided, single submitter | clinical testing | This missense variant replaces valine with leucine at codon 201 of the MLH1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with pancreatic cancer and an individual affected with endometrial cancer (PMID: 25479140, 34994648). This variant has been identified in 1/31408 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. |
Myriad Genetics, |
RCV000663069 | SCV004018117 | uncertain significance | Colorectal cancer, hereditary nonpolyposis, type 2 | 2023-03-13 | criteria provided, single submitter | clinical testing | This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. |
All of Us Research Program, |
RCV003995425 | SCV004835304 | uncertain significance | Lynch syndrome | 2023-12-13 | criteria provided, single submitter | clinical testing | This missense variant replaces valine with leucine at codon 201 of the MLH1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with pancreatic cancer and an individual affected with endometrial cancer (PMID: 25479140, 34994648). This variant has been identified in 1/31408 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. |