chr22-35085490-G-A

Position:

• chr22-35085490-G-A

Variant summary

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

The NM_001303508.2(ISX):​c.535G>A​(p.Ala179Thr) 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. 15/21 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)
• Consequence: ISX NM_001303508.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.250

Genes affected

ISX (HGNC:28084): (intestine specific homeobox) Homeobox genes encode DNA-binding proteins, many of which are thought to be involved in early embryonic development. Homeobox genes encode a DNA-binding domain of 60 to 63 amino acids referred to as the homeodomain. This gene is a member of the RAXLX homeobox gene family. [provided by RefSeq, Jul 2008]

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=0.21246374).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ISX	NM_001303508.2	c.535G>A	p.Ala179Thr	missense_variant	5/5	ENST00000404699.7
ISX	XM_047441598.1	c.535G>A	p.Ala179Thr	missense_variant	4/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ISX	ENST00000404699.7	c.535G>A	p.Ala179Thr	missense_variant	5/5	1	NM_001303508.2	P1
ISX	ENST00000308700.6	c.535G>A	p.Ala179Thr	missense_variant	4/4	1		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

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

May 06, 2024

The c.535G>A (p.A179T) alteration is located in exon 4 (coding exon 4) of the ISX gene. This alteration results from a G to A substitution at nucleotide position 535, causing the alanine (A) at amino acid position 179 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	Benign	0.076
BayesDel_addAF	Benign	-0.028	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	4.7
DANN	Uncertain	0.97
DEOGEN2	Benign	0.031	T;T
Eigen	Benign	-0.30
Eigen_PC	Benign	-0.41
FATHMM_MKL	Benign	0.075	N
LIST_S2	Benign	0.44	.;T
M_CAP	Benign	0.058	D
MetaRNN	Benign	0.21	T;T
MetaSVM	Benign	-0.31	T
MutationAssessor	Benign	1.0	L;L
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.70	N;N
REVEL	Benign	0.24
Sift	Uncertain	0.020	D;D
Sift4G	Benign	0.40	T;T
Polyphen		0.99	D;D
Vest4		0.11
MutPred		0.25		Gain of phosphorylation at A179 (P = 0.0252);Gain of phosphorylation at A179 (P = 0.0252);
MVP		0.86
MPC		0.011
ClinPred		0.35	T
GERP RS		4.1
Varity_R		0.067
gMVP		0.26

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: chr22-35481483;