chr10-132784957-G-C

Position:

• chr10-132784957-G-C

Variant summary

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

The NM_177400.3(NKX6-2):​c.793C>G​(p.Leu265Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 35)
• Consequence: NKX6-2 NM_177400.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.48

Genes affected

NKX6-2 (HGNC:19321): (NK6 homeobox 2) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in cell differentiation; regulation of myelination; and regulation of transcription, DNA-templated. Predicted to act upstream of or within several processes, including negative regulation of transcription by RNA polymerase II; neurogenesis; and neuromuscular process controlling balance. Predicted to be part of chromatin. Predicted to be active in nucleus. Implicated in spastic ataxia 8. [provided by Alliance of Genome Resources, Apr 2022]

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=0.18942007).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NKX6-2	NM_177400.3	c.793C>G	p.Leu265Val	missense_variant	3/3	ENST00000368592.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NKX6-2	ENST00000368592.8	c.793C>G	p.Leu265Val	missense_variant	3/3	1	NM_177400.3	P1

Frequencies

GnomAD3 genomes Cov.: 35

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 35

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 24, 2023

The c.793C>G (p.L265V) alteration is located in exon 3 (coding exon 3) of the NKX6-2 gene. This alteration results from a C to G substitution at nucleotide position 793, causing the leucine (L) at amino acid position 265 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 02, 2021

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 are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with NKX6-2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 265 of the NKX6-2 protein (p.Leu265Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.075	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
Eigen	Benign	-0.040
Eigen_PC	Benign	-0.00045
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.066	D
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.092
Sift	Uncertain	0.0090	D
Sift4G	Benign	0.10	T
Polyphen		0.30	B
Vest4		0.23
MutPred		0.27		Loss of disorder (P = 0.1584);
MVP		0.56
ClinPred		0.78	D
GERP RS		2.4
Varity_R		0.40
gMVP		0.35

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-134598461;