21-44638127-G-T

Position:

• chr21-44638127-G-T

Variant summary

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

The NM_181688.3(KRTAP10-10):​c.710G>T​(p.Arg237Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 27)
• Consequence: KRTAP10-10 NM_181688.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0130

Genes affected

KRTAP10-10 (HGNC:22972): (keratin associated protein 10-10) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

TSPEAR (HGNC:1268): (thrombospondin type laminin G domain and EAR repeats) This gene encodes a protein that contains a N-terminal thrombospondin-type laminin G domain and several tandem arranged epilepsy-associated repeats (EARs). A mutation in this gene is the cause of autosomal recessive deafness-98. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Dec 2012]

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=0.18383598).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRTAP10-10	NM_181688.3	c.710G>T	p.Arg237Leu	missense_variant	1/1	ENST00000380095.2	NP_859016.1
TSPEAR	NM_144991.3	c.83-70122C>A		intron_variant		ENST00000323084.9	NP_659428.2
TSPEAR	NM_001272037.2	c.-123+52418C>A		intron_variant			NP_001258966.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRTAP10-10	ENST00000380095.2	c.710G>T	p.Arg237Leu	missense_variant	1/1	6	NM_181688.3	ENSP00000369438.1
TSPEAR	ENST00000323084.9	c.83-70122C>A		intron_variant		1	NM_144991.3	ENSP00000321987.4
TSPEAR	ENST00000642437.1	n.*27+52418C>A		intron_variant				ENSP00000496535.1

Frequencies

GnomAD3 genomes Cov.: 27

GnomAD4 exome Cov.: 82

GnomAD4 genome Cov.: 27

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.037	.;T
Eigen	Benign	-0.56
Eigen_PC	Benign	-0.79
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.073	T;T
M_CAP	Benign	0.0057	T
MetaRNN	Benign	0.18	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Pathogenic	3.6	.;H
PrimateAI	Benign	0.20	T
PROVEAN	Pathogenic	-5.7	.;D
REVEL	Benign	0.10
Sift	Uncertain	0.0030	.;D
Sift4G	Uncertain	0.014	.;D
Polyphen		0.80	.;P
Vest4		0.14
MutPred		0.26		.;Gain of sheet (P = 0.1945);
MVP		0.17
MPC		0.063
ClinPred		0.85	D
GERP RS		1.5
Varity_R		0.25
gMVP		0.059

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs143765249; hg19: chr21-46058044;