9-1051732-C-T

Position:

• chr9-1051732-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001370532.1(DMRT2):​c.-532C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000145 in 1,381,898 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DMRT2 NM_001370532.1 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.30

Genes affected

DMRT2 (HGNC:2935): (doublesex and mab-3 related transcription factor 2) The protein encoded by this gene belongs to the DMRT gene family, sharing a DM DNA-binding domain with Drosophila 'doublesex' (dsx) and C. elegans mab3, genes involved in sex determination in these organisms. Also, this gene is located in a region of the human genome (chromosome 9p24.3) associated with gonadal dysgenesis and XY sex reversal. Hence this gene is one of the candidates for sex-determining gene(s) on chr 9. [provided by RefSeq, Apr 2010]

DMRT2 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21643397).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DMRT2	NM_181872.6	c.119C>T	p.Pro40Leu	missense_variant	2/4	ENST00000358146.7	NP_870987.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DMRT2	ENST00000358146.7	c.119C>T	p.Pro40Leu	missense_variant	2/4	1	NM_181872.6	ENSP00000350865.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000145 AC: 2 AN: 1381898 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 682508

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000292

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.29e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 24, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with DMRT2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 40 of the DMRT2 protein (p.Pro40Leu). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.051	.;.;T;.;T;.
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.59
FATHMM_MKL	Benign	0.030	N
LIST_S2	Benign	0.56	.;.;T;.;.;T
M_CAP	Pathogenic	0.48	D
MetaRNN	Benign	0.22	T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	L;L;L;L;L;L
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-0.46	.;N;N;N;N;N
REVEL	Benign	0.10
Sift	Uncertain	0.0010	.;D;D;D;D;D
Sift4G	Uncertain	0.0080	D;D;T;D;T;D
Polyphen		0.0020	.;.;B;.;B;.
Vest4		0.18
MutPred		0.17		Loss of glycosylation at P40 (P = 0.0192);Loss of glycosylation at P40 (P = 0.0192);Loss of glycosylation at P40 (P = 0.0192);Loss of glycosylation at P40 (P = 0.0192);Loss of glycosylation at P40 (P = 0.0192);Loss of glycosylation at P40 (P = 0.0192);
MVP		0.41
MPC		0.0069
ClinPred		0.25	T
GERP RS		3.7
Varity_R		0.087
gMVP		0.086

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

Other links and lift over

dbSNP: rs576144014; hg19: chr9-1051732; COSMIC: COSV52401769; COSMIC: COSV52401769;