rs77120160

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BA1BS3

This summary comes from the ClinGen Evidence Repository: NM_000249.4(MLH1):c.1732-19T>A is an intronic variant for which the gnomAD filtering allele frequency (African/African American) is 2.8% and gnomAD v4.1 Grpmax AF is 2.898%, meeting BA1 criteria according to the Maximum Credible Allele Frequency (MCAF) cutoffs for MLH1. There was also no impact on splicing in laboratory assays using nonsense-mediated decay inhibition (PMID:27629256). In summary, this variant meets the criteria to be classified as benign for Lynch Syndrome, based on the MMR gene specific ACMG/AMP criteria established by the ClinGen InSiGHT Hereditary Colorectal Cancer/ Polyposis VCEP: BA1 and BS3 (VCEP specifications version 1) LINK:https://erepo.genome.network/evrepo/ui/classification/CA006607/MONDO:0007356/115

Frequency

Genomes: 𝑓 0.0091 ( 25 hom., cov: 31)

Exomes 𝑓: 0.00087 ( 20 hom. )

Consequence

MLH1
NM_000249.4 intron

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:20

Conservation

PhyloP100: -2.00

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

Lynch syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet, G2P
Lynch syndrome 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp
Muir-Torre syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, G2P, Orphanet
mismatch repair cancer syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, G2P, ClinGen
Lynch syndrome 1
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
ovarian cancer
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
malignant pancreatic neoplasm
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
rhabdomyosarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
prostate cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
breast cancer
Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics
hereditary breast carcinoma
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

MLH1 links:

Genome browser will be placed here

ACMG classification

Specifications for MLH1 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BS3

For more information check the summary or visit ClinGen Evidence Repository.

BA1

For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000249.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MLH1	NM_000249.4	MANE Select	c.1732-19T>A	intron	N/A	NP_000240.1	P40692-1
MLH1	NM_001354628.2		c.1732-19T>A	intron	N/A	NP_001341557.1	A0A087WX20
MLH1	NM_001354629.2		c.1633-19T>A	intron	N/A	NP_001341558.1	A0AAQ5BGZ2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MLH1	ENST00000231790.8	TSL:1 MANE Select	c.1732-19T>A	intron	N/A	ENSP00000231790.3	P40692-1
MLH1	ENST00000456676.7	TSL:1	c.1732-19T>A	intron	N/A	ENSP00000416687.3	H0Y818
MLH1	ENST00000413740.2	TSL:1	c.1668-2986T>A	intron	N/A	ENSP00000416476.2	H0Y806

Frequencies

GnomAD3 genomes

AF:

0.00914

AC:

1391

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0321

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00321

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:

0.00478

GnomAD2 exomes

AF:

0.00214

AC:

538

AN:

251116

AF XY:

0.00153

show subpopulations

Gnomad AFR exome

AF:

0.0295

Gnomad AMR exome

AF:

0.00145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000874

AC:

1277

AN:

1461648

Hom.:

Cov.:

AF XY:

0.000734

AC XY:

534

AN XY:

727134

show subpopulations

African (AFR)

AF:

0.0305

AC:

1022

AN:

33474

American (AMR)

AF:

0.00181

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53346

Middle Eastern (MID)

AF:

0.000694

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000270

AC:

AN:

1111904

Other (OTH)

AF:

0.00224

AC:

135

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

130

194

259

324

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

128

160

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00913

AC:

1391

AN:

152310

Hom.:

Cov.:

AF XY:

0.00920

AC XY:

685

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.0320

AC:

1328

AN:

41556

American (AMR)

AF:

0.00320

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68030

Other (OTH)

AF:

0.00473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

136

204

272

340

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000388

Hom.:

Bravo

AF:

0.00982

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (7)

not provided (5)

Hereditary cancer-predisposing syndrome (3)

Colorectal cancer, hereditary nonpolyposis, type 2 (2)

Lynch syndrome (2)

Breast and/or ovarian cancer (1)

Hereditary nonpolyposis colorectal neoplasms (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

0.013

(source)

DANN

Benign

0.64

PhyloP100

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over