3-37020514-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000249.4(MLH1):c.1038+51C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.001 in 1,606,212 control chromosomes in the GnomAD database, including 13 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★★).

Frequency

Genomes: 𝑓 0.0054 ( 7 hom., cov: 33)

Exomes 𝑓: 0.00054 ( 6 hom. )

Consequence

MLH1
NM_000249.4 intron

Scores

Clinical Significance

Likely benign reviewed by expert panel B:11

Conservation

PhyloP100: -0.211

Variant links:

Genes affected

MLH1 (HGNC:7127): (mutL homolog 1) The protein encoded by this gene can heterodimerize with mismatch repair endonuclease PMS2 to form MutL alpha, part of the DNA mismatch repair system. When MutL alpha is bound by MutS beta and some accessory proteins, the PMS2 subunit of MutL alpha introduces a single-strand break near DNA mismatches, providing an entry point for exonuclease degradation. The encoded protein is also involved in DNA damage signaling and can heterodimerize with DNA mismatch repair protein MLH3 to form MutL gamma, which is involved in meiosis. This gene was identified as a locus frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). [provided by RefSeq, Aug 2017]

MLH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.76).

BP6

Variant 3-37020514-C-T is Benign according to our data. Variant chr3-37020514-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 89614.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr3-37020514-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00544 (828/152278) while in subpopulation AFR AF= 0.0188 (781/41548). AF 95% confidence interval is 0.0177. There are 7 homozygotes in gnomad4. There are 362 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 7 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MLH1	NM_000249.4 link	c.1038+51C>T		intron_variant	Intron 11 of 18	ENST00000231790.8	NP_000240.1	P40692-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MLH1	ENST00000231790.8 link	c.1038+51C>T		intron_variant	Intron 11 of 18	1	NM_000249.4	ENSP00000231790.3		P40692-1

Frequencies

GnomAD3 genomes

AF:

0.00544

AC:

827

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0188

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00210

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00526

GnomAD3 exomes

AF:

0.00137

AC:

332

AN:

243074

Hom.:

AF XY:

0.000880

AC XY:

116

AN XY:

131804

show subpopulations

Gnomad AFR exome

AF:

0.0198

Gnomad AMR exome

AF:

0.000559

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000184

Gnomad OTH exome

AF:

0.000334

GnomAD4 exome

AF:

0.000539

AC:

784

AN:

1453934

Hom.:

Cov.:

AF XY:

0.000405

AC XY:

293

AN XY:

723240

show subpopulations

Gnomad4 AFR exome

AF:

0.0189

Gnomad4 AMR exome

AF:

0.000610

Gnomad4 ASJ exome

AF:

0.0000768

Gnomad4 EAS exome

AF:

0.0000254

Gnomad4 SAS exome

AF:

0.0000351

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000506

Gnomad4 OTH exome

AF:

0.00105

GnomAD4 genome

AF:

0.00544

AC:

828

AN:

152278

Hom.:

Cov.:

AF XY:

0.00486

AC XY:

362

AN XY:

74466

show subpopulations

Gnomad4 AFR

AF:

0.0188

Gnomad4 AMR

AF:

0.00209

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00520

Alfa

AF:

0.00231

Hom.:

Bravo

AF:

0.00592

Asia WGS

AF:

0.00404

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:11

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Benign:3

Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Dec 19, 2014	- -
Benign, criteria provided, single submitter	curation	Sema4, Sema4	Feb 06, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Nov 18, 2014	This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Colorectal cancer, hereditary nonpolyposis, type 2

Benign:2

Benign, criteria provided, single submitter	clinical testing	Counsyl	Feb 07, 2018	- -
Likely benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	This variant is associated with the following publications: (PMID: 11726306) -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Mar 13, 2018

- -

Lynch syndrome 1

Benign:1

Likely benign, reviewed by expert panel

research

International Society for Gastrointestinal Hereditary Tumours (InSiGHT)

Oct 10, 2014

MAF >1% in a specific ethnic group (African population) -

Muir-Torré syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Feb 01, 2025

- -

Hereditary nonpolyposis colorectal neoplasms

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 04, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

DANN

Benign

0.80

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over