4-153355675-G-T

Position:

• chr4-153355675-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The ENST00000240488.8(MND1):​c.91G>T​(p.Asp31Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MND1 ENST00000240488.8 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.71

Genes affected

MND1 (HGNC:24839): (meiotic nuclear divisions 1) The product of the MND1 gene associates with HOP2 (MIM 608665) to form a stable heterodimeric complex that binds DNA and stimulates the recombinase activity of RAD51 (MIM 179617) and DMC1 (MIM 602721) (Chi et al., 2007 [PubMed 17639080]). Both the MND1 and HOP2 genes are indispensable for meiotic recombination.[supplied by OMIM, Mar 2008]

ENSG00000288637 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.873

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MND1	NM_032117.4	c.91G>T	p.Asp31Tyr	missense_variant	3/8	ENST00000240488.8	NP_115493.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MND1	ENST00000240488.8	c.91G>T	p.Asp31Tyr	missense_variant	3/8	1	NM_032117.4	ENSP00000240488.3
ENSG00000288637	ENST00000675079.1	c.2182G>T	p.Asp728Tyr	missense_variant	13/18			ENSP00000502677.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 21, 2024

The c.91G>T (p.D31Y) alteration is located in exon 3 (coding exon 3) of the MND1 gene. This alteration results from a G to T substitution at nucleotide position 91, causing the aspartic acid (D) at amino acid position 31 to be replaced by a tyrosine (Y). 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	Uncertain	0.54
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	T;T;T;T
Eigen	Pathogenic	0.98
Eigen_PC	Pathogenic	0.95
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.96	D;D;D;D
M_CAP	Benign	0.011	T
MetaRNN	Pathogenic	0.87	D;D;D;D
MetaSVM	Uncertain	0.15	D
MutationAssessor	Pathogenic	3.2	.;M;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-5.5	.;D;D;D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0010	.;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D
Polyphen		1.0	.;D;.;.
Vest4		0.85
MutPred		0.63		Loss of disorder (P = 0.0126);Loss of disorder (P = 0.0126);.;.;
MVP		0.62
MPC		0.47
ClinPred		1.0	D
GERP RS		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.90
gMVP		0.68

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.19		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-154276827; COSMIC: COSV53655371;