ITGA2 p.Thr275Thr

Variant names:

• chr5-53055580-T-T
• NM_002203.4:c.

Your query was ambiguous. Multiple possible variants found:

• chr5-53055581--
• chr5-53055583-G-T
• chr5-53055583-G-C
• chr5-53055583-G-A

Variant summary

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

The NM_002203.4(ITGA2):​c. variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ITGA2 NM_002203.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.03
• Publications: 0 publications found

Genes affected

ITGA2 (HGNC:6137): (integrin subunit alpha 2) This gene encodes the alpha subunit of a transmembrane receptor for collagens and related proteins. The encoded protein forms a heterodimer with a beta subunit and mediates the adhesion of platelets and other cell types to the extracellular matrix. Loss of the encoded protein is associated with bleeding disorder platelet-type 9. Antibodies against this protein are found in several immune disorders, including neonatal alloimmune thrombocytopenia. This gene is located adjacent to a related alpha subunit gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

ITGA2 Gene-Disease associations (from GenCC):

• platelet-type bleeding disorder 9

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

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_002203.4. 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
	ITGA2	NM_002203.4	MANE Select	c.		intron	N/A	NP_002194.2	P17301
	ITGA2	NR_073103.2		n.		intron	N/A
	ITGA2	NR_073104.2		n.		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGA2	ENST00000296585.10	TSL:1 MANE Select	c.		splice_donor intron	N/A	ENSP00000296585.5	P17301
	ITGA2	ENST00000509814.5	TSL:1	n.		splice_donor intron	N/A	ENSP00000424397.1	E7EMF1
	ITGA2	ENST00000509960.5	TSL:1	n.		splice_donor intron	N/A	ENSP00000424642.1	E9PB77

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.0

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr5-52351410;