21-44917375-T-G

Variant names:

• chr21-44917375-T-G
• rs1474552
• NM_000211.5:c.-4+3446A>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000211.5(ITGB2):​c.-4+3446A>C variant causes a intron 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ITGB2 NM_000211.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.100
• Publications: 13 publications found

Genes affected

ITGB2 (HGNC:6155): (integrin subunit beta 2) This gene encodes an integrin beta chain, which combines with multiple different alpha chains to form different integrin heterodimers. Integrins are integral cell-surface proteins that participate in cell adhesion as well as cell-surface mediated signalling. The encoded protein plays an important role in immune response and defects in this gene cause leukocyte adhesion deficiency. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

ITGB2 Gene-Disease associations (from GenCC):

• leukocyte adhesion deficiency 1

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000211.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGB2	NM_000211.5	MANE Select	c.-4+3446A>C		intron	N/A	NP_000202.3
	ITGB2	NM_001127491.3		c.-3-6590A>C		intron	N/A	NP_001120963.2
	ITGB2	NM_001303238.2		c.-254+3446A>C		intron	N/A	NP_001290167.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGB2	ENST00000652462.1	MANE Select	c.-4+3446A>C		intron	N/A	ENSP00000498780.1
	ITGB2	ENST00000302347.10	TSL:1	c.-4+3446A>C		intron	N/A	ENSP00000303242.6
	ITGB2	ENST00000397854.7	TSL:1	c.-4+3446A>C		intron	N/A	ENSP00000380952.3

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	8.2
DANN	Benign	0.83
PhyloP100		-0.10

Splicing

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

Other links and lift over

dbSNP: rs1474552; hg19: chr21-46337290;