22-37182267-C-T

Variant names:

• chr22-37182267-C-T
• rs1457358945
• NM_031910.4:c.758G>A

Variant summary

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

The NM_031910.4(C1QTNF6):​c.758G>A​(p.Arg253His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,461,828 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: C1QTNF6 NM_031910.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.89

Genes affected

C1QTNF6 (HGNC:14343): (C1q and TNF related 6) Predicted to enable identical protein binding activity. Predicted to be located in extracellular space. Predicted to be integral component of membrane. Predicted to be part of protein-containing complex. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000235237 (HGNC:40300):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C1QTNF6	NM_031910.4	c.758G>A	p.Arg253His	missense_variant	Exon 3 of 3	ENST00000337843.7	NP_114116.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C1QTNF6	ENST00000337843.7	c.758G>A	p.Arg253His	missense_variant	Exon 3 of 3	1	NM_031910.4	ENSP00000338812.2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250842 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135664

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000130 AC: 19 AN: 1461828 Hom.: 0 Cov.: 33 AF XY: 0.0000151 AC XY: 11 AN XY: 727224

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000153

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

Bravo AF: 0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 03, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.758G>A (p.R253H) alteration is located in exon 3 (coding exon 3) of the C1QTNF6 gene. This alteration results from a G to A substitution at nucleotide position 758, causing the arginine (R) at amino acid position 253 to be replaced by a histidine (H). 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	Benign	0.31
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	26
DANN	Pathogenic	1.0
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.92	.;D
M_CAP	Benign	0.041	D
MetaRNN	Uncertain	0.70	D;D
MetaSVM	Benign	-0.90	T
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-3.8	D;D
REVEL	Uncertain	0.37
Sift	Uncertain	0.010	D;D
Sift4G	Uncertain	0.053	T;T
Vest4		0.71
MVP		0.70
MPC		0.88
ClinPred		0.97	D
GERP RS		4.9
Varity_R		0.31
gMVP		0.66

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

LitVar

Other links and lift over

dbSNP: rs1457358945; hg19: chr22-37578307;