chr17-81086553-T-C

Variant names:

• chr17-81086553-T-C
• rs35895585
• NM_001144888.2:c.462T>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001144888.2(BAIAP2):​c.462T>C​(p.Pro154Pro) variant causes a synonymous 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. Synonymous variant affecting the same amino acid position (i.e. P154P) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: BAIAP2 NM_001144888.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -7.55
• Publications: 0 publications found

Genes affected

BAIAP2 (HGNC:947): (BAR/IMD domain containing adaptor protein 2) The protein encoded by this gene has been identified as a brain-specific angiogenesis inhibitor (BAI1)-binding protein. This adaptor protein links membrane bound G-proteins to cytoplasmic effector proteins. This protein functions as an insulin receptor tyrosine kinase substrate and suggests a role for insulin in the central nervous system. It also associates with a downstream effector of Rho small G proteins, which is associated with the formation of stress fibers and cytokinesis. This protein is involved in lamellipodia and filopodia formation in motile cells and may affect neuronal growth-cone guidance. This protein has also been identified as interacting with the dentatorubral-pallidoluysian atrophy gene, which is associated with an autosomal dominant neurodegenerative disease. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Jan 2009]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP7: Synonymous conserved (PhyloP=-7.55 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001144888.2. 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
	BAIAP2	NM_001144888.2	MANE Select	c.462T>C	p.Pro154Pro	synonymous	Exon 6 of 14	NP_001138360.1	Q9UQB8-2
	BAIAP2	NM_001385129.1		c.561T>C	p.Pro187Pro	synonymous	Exon 7 of 17	NP_001372058.1
	BAIAP2	NM_001385130.1		c.561T>C	p.Pro187Pro	synonymous	Exon 7 of 15	NP_001372059.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BAIAP2	ENST00000428708.7	TSL:1 MANE Select	c.462T>C	p.Pro154Pro	synonymous	Exon 6 of 14	ENSP00000401022.2	Q9UQB8-2
	BAIAP2	ENST00000321300.10	TSL:1	c.462T>C	p.Pro154Pro	synonymous	Exon 6 of 15	ENSP00000316338.6	Q9UQB8-1
	BAIAP2	ENST00000321280.11	TSL:1	c.462T>C	p.Pro154Pro	synonymous	Exon 6 of 14	ENSP00000315685.7	Q9UQB8-4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.15
DANN	Benign	0.49
PhyloP100		-7.5
PromoterAI		0.012	Neutral

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: rs35895585; hg19: chr17-79060353;