Genetic Variant DMRT1:p.Asn224Thr (chr9-894044-A-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_021951.3(DMRT1):c.671A>C(p.Asn224Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N224S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

DMRT1
NM_021951.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.66

Publications

0 publications found

Variant links:

Genes affected

DMRT1 (HGNC:2934): (doublesex and mab-3 related transcription factor 1) This gene is found in a cluster with two other members of the gene family, having in common a zinc finger-like DNA-binding motif (DM domain). The DM domain is an ancient, conserved component of the vertebrate sex-determining pathway that is also a key regulator of male development in flies and nematodes. This gene exhibits a gonad-specific and sexually dimorphic expression pattern. Defective testicular development and XY feminization occur when this gene is hemizygous. [provided by RefSeq, Jul 2008]

DMRT1 Gene-Disease associations (from GenCC):

46,XY disorder of sex development
Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
46,XX disorder of sex development
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

DMRT1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.795

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMRT1	NM_021951.3 link	c.671A>C	p.Asn224Thr	missense_variant	Exon 3 of 5	ENST00000382276.8	NP_068770.2	Q9Y5R6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DMRT1	ENST00000382276.8 link	c.671A>C	p.Asn224Thr	missense_variant	Exon 3 of 5	1	NM_021951.3	ENSP00000371711.3	Q9Y5R6-1
DMRT1	ENST00000569227.1 link	c.197A>C	p.Asn66Thr	missense_variant	Exon 3 of 5	1		ENSP00000454701.1	H3BN61
DMRT1	ENST00000564322.1 link	n.820A>C		non_coding_transcript_exon_variant	Exon 3 of 3	1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461892

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727248

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1112010

Other (OTH)

AF:

0.00

AC:

AN:

60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.300

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Benign

-0.0072

BayesDel_noAF

Benign

-0.25

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

D;T

Eigen

Pathogenic

0.70

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.80

D;D

MetaSVM

Benign

-0.72

MutationAssessor

Pathogenic

3.1

M;.

PhyloP100

6.7

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-4.6

D;D

REVEL

Uncertain

0.37

Sift

Uncertain

0.0010

D;D

Sift4G

Uncertain

0.011

D;D

Polyphen

0.98

D;.

Vest4

0.80

MutPred

0.53

Gain of helix (P = 0.062);.;

MVP

0.51

MPC

0.74

ClinPred

1.0

GERP RS

4.8

Varity_R

0.67

gMVP

0.47

Mutation Taster

=71/29

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over