2-172465628-G-T

Variant names:

• chr2-172465628-G-T
• rs200823590
• ENST00000412899.5:c.-71G>T

Variant summary

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

The NM_001316306.2(ITGA6):​c.-71G>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,614,176 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ITGA6 NM_001316306.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.857
• Publications: 0 publications found

Genes affected

ITGA6 (HGNC:6142): (integrin subunit alpha 6) The gene encodes a member of the integrin alpha chain family of proteins. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha 6 subunit. This subunit may associate with a beta 1 or beta 4 subunit to form an integrin that interacts with extracellular matrix proteins including members of the laminin family. The alpha 6 beta 4 integrin may promote tumorigenesis, while the alpha 6 beta 1 integrin may negatively regulate erbB2/HER2 signaling. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]

ITGA6-AS1 (HGNC:40308): (ITGA6 antisense RNA 1)

PDK1-AS1 (HGNC:40441): (PDK1 and ITGA6 antisense RNA 1)

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=0.10916436).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001316306.2. 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
	ITGA6	NM_001394928.1	MANE Plus Clinical	c.272G>T	p.Arg91Leu	missense	Exon 2 of 26	NP_001381857.1	P23229-1
	ITGA6	NM_000210.4	MANE Select	c.272G>T	p.Arg91Leu	missense	Exon 2 of 26	NP_000201.2	P23229-2
	ITGA6	NM_001316306.2		c.-71G>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 26	NP_001303235.1	P23229-7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGA6	ENST00000412899.5	TSL:1	c.-71G>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 7	ENSP00000413470.1	C9JXX7
	ITGA6	ENST00000442250.6	TSL:5 MANE Plus Clinical	c.272G>T	p.Arg91Leu	missense	Exon 2 of 26	ENSP00000406694.1	P23229-1
	ITGA6	ENST00000684293.1	MANE Select	c.272G>T	p.Arg91Leu	missense	Exon 2 of 26	ENSP00000508249.1	P23229-2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152216 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251344 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461842 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111990

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome AF: 0.00000656 AC: 1 AN: 152334 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74488

African (AFR) AF: 0.00 AC: 0 AN: 41580

American (AMR) AF: 0.00 AC: 0 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.048	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.22	T
Eigen	Benign	-0.93
Eigen_PC	Benign	-0.89
FATHMM_MKL	Benign	0.50	N
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.057	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.73	T
MutationAssessor	Benign	0.65	N
PhyloP100		0.86
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.16
Sift	Benign	0.19	T
Sift4G	Benign	0.19	T
Polyphen		0.0	B
Vest4		0.23
MutPred		0.41		Loss of disorder (P = 0.0491)
MVP		0.71
MPC		0.58
ClinPred		0.098	T
GERP RS		-1.4
Varity_R		0.093
gMVP		0.44
Mutation Taster		=94/6	polymorphism

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

Other links and lift over

dbSNP: rs200823590; hg19: chr2-173330356;