15-36894807-T-C

Variant names:

• chr15-36894807-T-C
• rs201131653
• ENST00000424352.6:c.1153A>G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_170677.5(MEIS2):​c.1153A>G​(p.Met385Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,459,242 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: MEIS2 NM_170677.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.97

Genes affected

MEIS2 (HGNC:7001): (Meis homeobox 2) This gene encodes a homeobox protein belonging to the TALE ('three amino acid loop extension') family of homeodomain-containing proteins. TALE homeobox proteins are highly conserved transcription regulators, and several members have been shown to be essential contributors to developmental programs. Multiple transcript variants encoding distinct isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the MEIS2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 14 curated pathogenic missense variants (we use a threshold of 10). The gene has 6 curated benign missense variants. Gene score misZ: 2.4571 (below the threshold of 3.09). Trascript score misZ: 3.9388 (above the threshold of 3.09). GenCC associations: The gene is linked to syndromic intellectual disability, cardiac malformation, cleft lip/palate, microcephaly, and digital anomalies.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEIS2	NM_170675.5	c.1147+344A>G		intron_variant	Intron 11 of 11	ENST00000561208.6	NP_733775.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEIS2	ENST00000561208.6	c.1147+344A>G		intron_variant	Intron 11 of 11	1	NM_170675.5	ENSP00000453793.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459242 Hom.: 0 Cov.: 29 AF XY: 0.00000275 AC XY: 2 AN XY: 726146

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000827 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Cardiac malformation, cleft lip/palate, microcephaly, and digital anomalies Uncertain:1

Oct 05, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 378 of the MEIS2 protein (p.Met378Val). This variant is present in population databases (rs201131653, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with MEIS2-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt MEIS2 protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Benign	23
DANN	Benign	0.90
Eigen	Benign	0.12
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	.;D;D;.;D;D;D
M_CAP	Benign	0.046	D
MetaRNN	Uncertain	0.49	T;T;T;T;T;T;T
MetaSVM	Benign	-0.32	T
PROVEAN	Benign	-0.41	N;N;N;.;N;N;N
REVEL	Uncertain	0.36
Sift	Benign	0.27	T;T;T;.;T;T;T
Sift4G	Benign	0.67	T;T;T;T;T;T;T
Polyphen		0.0070, 0.45	.;.;.;.;.;B;B
Vest4		0.60
MVP		0.91
ClinPred		0.27	T
GERP RS		5.5

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs201131653; hg19: chr15-37187008;