Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS1
The NM_000535.7(PMS2):c.1145-11C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000635 in 1,558,792 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
PMS2 (HGNC:9122): (PMS1 homolog 2, mismatch repair system component) The protein encoded by this gene is a key component of the mismatch repair system that functions to correct DNA mismatches and small insertions and deletions that can occur during DNA replication and homologous recombination. This protein forms heterodimers with the gene product of the mutL homolog 1 (MLH1) gene to form the MutL-alpha heterodimer. The MutL-alpha heterodimer possesses an endonucleolytic activity that is activated following recognition of mismatches and insertion/deletion loops by the MutS-alpha and MutS-beta heterodimers, and is necessary for removal of the mismatched DNA. There is a DQHA(X)2E(X)4E motif found at the C-terminus of the protein encoded by this gene that forms part of the active site of the nuclease. Mutations in this gene have been associated with hereditary nonpolyposis colorectal cancer (HNPCC; also known as Lynch syndrome) and Turcot syndrome. [provided by RefSeq, Apr 2016]
Computational evidence support a benign effect (BayesDel_noAF=-0.88).
BP6
Variant 7-5987631-G-A is Benign according to our data. Variant chr7-5987631-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 492248.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000394 (6/152254) while in subpopulation SAS AF= 0.00104 (5/4828). AF 95% confidence interval is 0.000408. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
Review Status: criteria provided, single submitter
Collection Method: clinical testing
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Mismatch repair cancer syndrome 1 Benign:1
Jul 28, 2020
Department of Pathology and Laboratory Medicine, Sinai Health System
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
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Lynch syndrome 4 Benign:1
Oct 10, 2024
Myriad Genetics, Inc.
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This variant is considered benign. This variant is intronic and is not expected to impact mRNA splicing. Homozygosity for this variant has been confirmed in one or more individuals lacking clinical features consistent with gene-specific recessive disease, indicating that this variant is unlikely to be pathogenic. -