11-18709504-T-C

Position:

• chr11-18709504-T-C

Variant summary

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

The NM_173588.4(IGSF22):​c.2881A>G​(p.Thr961Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: IGSF22 NM_173588.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.24

Genes affected

IGSF22 (HGNC:26750): (immunoglobulin superfamily member 22)

IGSF22-AS1 (HGNC:55511): (IGSF22 antisense RNA 1)

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/exons	MANE	Protein	UniProt
IGSF22	NM_173588.4	c.2881A>G	p.Thr961Ala	missense_variant	18/23	ENST00000513874.6	NP_775859.4
IGSF22	XM_047426830.1	c.955A>G	p.Thr319Ala	missense_variant	5/10		XP_047282786.1
IGSF22	NR_160413.1	n.2726A>G		non_coding_transcript_exon_variant	17/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IGSF22	ENST00000513874.6	c.2881A>G	p.Thr961Ala	missense_variant	18/23	5	NM_173588.4	ENSP00000421191	P1
IGSF22	ENST00000504981.5	n.3221A>G		non_coding_transcript_exon_variant	17/20	1
IGSF22-AS1	ENST00000527285.1	n.729+2111T>C		intron_variant, non_coding_transcript_variant		3
IGSF22	ENST00000319338.6	c.2578A>G	p.Thr860Ala	missense_variant, NMD_transcript_variant	17/21	2		ENSP00000322422

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461892 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

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

Feb 11, 2022

The c.2881A>G (p.T961A) alteration is located in exon 18 (coding exon 17) of the IGSF22 gene. This alteration results from a A to G substitution at nucleotide position 2881, causing the threonine (T) at amino acid position 961 to be replaced by an alanine (A). 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	0.19
BayesDel_addAF	Benign	-0.061	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	22
DANN	Uncertain	1.0
Eigen	Uncertain	0.20
Eigen_PC	Benign	0.14
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.54	T
M_CAP	Benign	0.035	D
MetaRNN	Uncertain	0.45	T
MetaSVM	Benign	-0.92	T
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-4.1	D
REVEL	Benign	0.27
Sift	Uncertain	0.028	D
Sift4G	Pathogenic	0.0	D
Vest4		0.42
MutPred		0.54		Gain of MoRF binding (P = 0.1603);
MVP		0.49
MPC		0.80
ClinPred		0.97	D
GERP RS		3.1
gMVP		0.55

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: chr11-18731051;