Genetic Variant DMBT1:p.Glu69Asp (chr10-122572333-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001377530.1(DMBT1):c.207G>C(p.Glu69Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,994 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

DMBT1
NM_001377530.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.220

Publications

0 publications found

Variant links:

Genes affected

DMBT1 (HGNC:2926): (deleted in malignant brain tumors 1) Loss of sequences from human chromosome 10q has been associated with the progression of human cancers. This gene was originally isolated based on its deletion in a medulloblastoma cell line. This gene is expressed with transcripts of 6.0, 7.5, and 8.0 kb in fetal lung and with one transcript of 8.0 kb in adult lung, although the 7.5 kb transcript has not been characterized. The encoded protein precursor is a glycoprotein containing multiple scavenger receptor cysteine-rich (SRCR) domains separated by SRCR-interspersed domains (SID). Transcript variant 2 (8.0 kb) has been shown to bind surfactant protein D independently of carbohydrate recognition. This indicates that DMBT1 may not be a classical tumor suppressor gene, but rather play a role in the interaction of tumor cells and the immune system. [provided by RefSeq, Mar 2016]

DMBT1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06376842).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMBT1	NM_001377530.1 link	c.207G>C	p.Glu69Asp	missense_variant	Exon 5 of 56	ENST00000338354.10	NP_001364459.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DMBT1	ENST00000338354.10 link	c.207G>C	p.Glu69Asp	missense_variant	Exon 5 of 56	1	NM_001377530.1	ENSP00000342210.4		Q9UGM3-6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460994

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726786

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44686

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53310

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111376

Other (OTH)

AF:

0.00

AC:

AN:

60326

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 31, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.207G>C (p.E69D) alteration is located in exon 5 (coding exon 5) of the DMBT1 gene. This alteration results from a G to C substitution at nucleotide position 207, causing the glutamic acid (E) at amino acid position 69 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

9.1

(source)

DANN

Benign

0.58

DEOGEN2

Benign

0.027

.;.;.;.;T;.;T

Eigen

Benign

-0.92

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.36

T;.;.;T;.;T;T

M_CAP

Benign

0.00085

MetaRNN

Benign

0.064

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.55

N;N;N;N;N;N;N

PhyloP100

0.22

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.060

N;N;N;N;N;N;.

REVEL

Benign

0.057

Sift

Benign

0.40

T;T;T;T;T;T;.

Sift4G

Benign

0.58

T;T;T;T;T;T;T

Polyphen

0.57

P;B;P;B;P;P;P

Vest4

0.12

MutPred

0.18

Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);Gain of glycosylation at S70 (P = 0.1426);

MVP

0.40

MPC

0.16

ClinPred

0.14

GERP RS

1.3

Varity_R

0.033

gMVP

0.15

Mutation Taster

=99/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over