chr11-47577629-A-G

Position:

• chr11-47577629-A-G

Variant summary

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

The NM_018095.6(KBTBD4):​c.419T>C​(p.Met140Thr) 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: KBTBD4 NM_018095.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.89

Genes affected

KBTBD4 (HGNC:23761): (kelch repeat and BTB domain containing 4)

NDUFS3 (HGNC:7710): (NADH:ubiquinone oxidoreductase core subunit S3) This gene encodes one of the iron-sulfur protein (IP) components of mitochondrial NADH:ubiquinone oxidoreductase (complex I). Mutations in this gene are associated with Leigh syndrome resulting from mitochondrial complex I deficiency.[provided by RefSeq, Apr 2009]

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, 0.9

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KBTBD4	NM_018095.6	c.419T>C	p.Met140Thr	missense_variant	2/4	ENST00000430070.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KBTBD4	ENST00000430070.7	c.419T>C	p.Met140Thr	missense_variant	2/4	1	NM_018095.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

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

Dec 22, 2023

The c.419T>C (p.M140T) alteration is located in exon 2 (coding exon 2) of the KBTBD4 gene. This alteration results from a T to C substitution at nucleotide position 419, causing the methionine (M) at amino acid position 140 to be replaced by a threonine (T). 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	Pathogenic	0.82
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.55	D;T;D;.;T;T;T;.;T
Eigen	Pathogenic	0.70
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.96	D
M_CAP	Uncertain	0.21	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.049	T
MutationAssessor	Benign	1.8	L;.;L;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Pathogenic	0.85	D
PROVEAN	Uncertain	-3.2	D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.81
Sift	Uncertain	0.0010	D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0040	D;D;D;D;D;.;D;D;.
Polyphen		0.97	D;.;D;D;.;.;.;.;.
Vest4		0.93
MutPred		0.76		Loss of stability (P = 0.0892);.;Loss of stability (P = 0.0892);.;.;Loss of stability (P = 0.0892);Loss of stability (P = 0.0892);Loss of stability (P = 0.0892);.;
MVP		0.95
MPC		0.93
ClinPred		0.98	D
GERP RS		5.4
Varity_R		0.72
gMVP		0.64

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: chr11-47599181;