NM_198690.3:c.26G>A

Variant names:

• chr21-44627197-G-A
• rs1555934550
• NM_198690.3:c.26G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_198690.3(KRTAP10-9):​c.26G>A​(p.Arg9His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,704 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: KRTAP10-9 NM_198690.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.76
• Publications: 0 publications found

Genes affected

KRTAP10-9 (HGNC:22971): (keratin associated protein 10-9) 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]

TSPEAR Gene-Disease associations (from GenCC):

• ectodermal dysplasia 14, hair/tooth type with or without hypohidrosis

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive nonsyndromic hearing loss 98

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1202074).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198690.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRTAP10-9	NM_198690.3	MANE Select	c.26G>A	p.Arg9His	missense	Exon 1 of 1	NP_941963.2	P60411-1
	TSPEAR	NM_144991.3	MANE Select	c.83-59192C>T		intron	N/A	NP_659428.2
	TSPEAR	NM_001272037.2		c.-122-59192C>T		intron	N/A	NP_001258966.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRTAP10-9	ENST00000397911.5	TSL:6 MANE Select	c.26G>A	p.Arg9His	missense	Exon 1 of 1	ENSP00000381009.3	P60411-1
	TSPEAR	ENST00000323084.9	TSL:1 MANE Select	c.83-59192C>T		intron	N/A	ENSP00000321987.4	Q8WU66-1
	KRTAP10-9	ENST00000484861.1	TSL:1	n.75G>A		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000798 AC: 2 AN: 250582 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1460704 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726668

African (AFR) AF: 0.00 AC: 0 AN: 33442

American (AMR) AF: 0.0000224 AC: 1 AN: 44708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86184

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4914

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111938

Other (OTH) AF: 0.0000166 AC: 1 AN: 60300

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0020	T
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.71	D
LIST_S2	Benign	0.72	T
M_CAP	Benign	0.0044	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.0	N
PhyloP100		1.8
PrimateAI	Benign	0.34	T
PROVEAN	Benign	0.060	N
REVEL	Benign	0.064
Sift	Uncertain	0.0090	D
Sift4G	Uncertain	0.059	T
Polyphen		0.0050	B
Vest4		0.18
MutPred		0.43		Loss of MoRF binding (P = 0.0717)
MVP		0.17
ClinPred		0.12	T
GERP RS		2.8
PromoterAI		-0.051	Neutral
Varity_R		0.043
gMVP		0.082
Mutation Taster		=97/3	polymorphism

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

Other links and lift over

dbSNP: rs1555934550; hg19: chr21-46047114;