16-30499171-A-G

Variant names:

• chr16-30499171-A-G
• rs748355671
• NM_002209.3:c.1930A>G

Variant summary

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

The NM_002209.3(ITGAL):​c.1930A>G​(p.Met644Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/24 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M644L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: ITGAL NM_002209.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.218
• Publications: 0 publications found

Genes affected

ITGAL (HGNC:6148): (integrin subunit alpha L) ITGAL encodes the integrin alpha L chain. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This I-domain containing alpha integrin combines with the beta 2 chain (ITGB2) to form the integrin lymphocyte function-associated antigen-1 (LFA-1), which is expressed on all leukocytes. LFA-1 plays a central role in leukocyte intercellular adhesion through interactions with its ligands, ICAMs 1-3 (intercellular adhesion molecules 1 through 3), and also functions in lymphocyte costimulatory signaling. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ITGAL-AS1 (HGNC:56737): (ITGAL antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002209.3. 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
	ITGAL	NM_002209.3	MANE Select	c.1930A>G	p.Met644Val	missense	Exon 16 of 31	NP_002200.2	P20701-1
	ITGAL	NM_001114380.2		c.1681A>G	p.Met561Val	missense	Exon 14 of 29	NP_001107852.1	P20701-3
	ITGAL-AS1	NR_186415.1		n.192-20T>C		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGAL	ENST00000356798.11	TSL:1 MANE Select	c.1930A>G	p.Met644Val	missense	Exon 16 of 31	ENSP00000349252.5	P20701-1
	ITGAL	ENST00000358164.9	TSL:1	c.1681A>G	p.Met561Val	missense	Exon 14 of 29	ENSP00000350886.5	P20701-3
	ITGAL	ENST00000955586.1		c.1936A>G	p.Met646Val	missense	Exon 16 of 31	ENSP00000625645.1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152040 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000199 AC: 5 AN: 251476 AF XY: 0.0000221

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000103 AC: 15 AN: 1461836 Hom.: 0 Cov.: 30 AF XY: 0.00000688 AC XY: 5 AN XY: 727226

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44720

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

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39694

South Asian (SAS) AF: 0.000116 AC: 10 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111976

Other (OTH) AF: 0.0000497 AC: 3 AN: 60390

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152040 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74284

African (AFR) AF: 0.00 AC: 0 AN: 41402

American (AMR) AF: 0.00 AC: 0 AN: 15254

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67978

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.074
BayesDel_addAF	Benign	-0.50	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	19
DANN	Benign	0.74
DEOGEN2	Benign	0.047	T
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.45
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.025	T
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.34	N
PhyloP100		0.22
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.87	N
REVEL	Benign	0.015
Sift	Benign	0.29	T
Sift4G	Uncertain	0.058	T
Polyphen		0.0010	B
Vest4		0.17
MutPred		0.42		Gain of methylation at K645 (P = 0.0173)
MVP		0.45
MPC		0.31
ClinPred		0.046	T
GERP RS		2.6
Varity_R		0.064
gMVP		0.56
Mutation Taster		=76/24	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.29		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.29		Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs748355671; hg19: chr16-30510492;