9-16733959-A-C

Variant names:

• chr9-16733959-A-C
• rs2840290
• NM_017637.6:c.129+4401T>G

Variant summary

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

The NM_017637.6(BNC2):​c.129+4401T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 151,854 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 0.000020 (0 hom., cov: 32)
• Consequence: BNC2 NM_017637.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0510
• Publications: 7 publications found

Genes affected

BNC2 (HGNC:30988): (basonuclin zinc finger protein 2) This gene encodes a conserved zinc finger protein. The encoded protein functions in skin color saturation. Mutations in this gene are associated with facial pigmented spots. This gene is also associated with susceptibility to adolescent idiopathic scoliosis. [provided by RefSeq, Jul 2016]

BNC2 Gene-Disease associations (from GenCC):

• lower urinary tract obstruction, congenital

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• posterior urethral valve

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

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=-0.87).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017637.6. 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
	BNC2	NM_017637.6	MANE Select	c.129+4401T>G		intron	N/A	NP_060107.3
	BNC2	NM_001317940.2		c.45+98285T>G		intron	N/A	NP_001304869.1
	BNC2	NM_001317939.2		c.4-5962T>G		intron	N/A	NP_001304868.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BNC2	ENST00000380672.9	TSL:2 MANE Select	c.129+4401T>G		intron	N/A	ENSP00000370047.3	Q6ZN30-1
	BNC2	ENST00000545497.5	TSL:1	c.-393-5962T>G		intron	N/A	ENSP00000444640.2	F5H586
	BNC2	ENST00000613349.4	TSL:1	c.-105-5962T>G		intron	N/A	ENSP00000477717.1	Q06HC7

Frequencies

GnomAD3 genomes AF: 0.0000198 AC: 3 AN: 151854 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000484

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.0000198 AC: 3 AN: 151854 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74136

African (AFR) AF: 0.0000484 AC: 2 AN: 41346

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

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10520

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67954

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

Alfa AF: 0.00 Hom.: 4297

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	1.3
DANN	Benign	0.68
PhyloP100		-0.051

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: rs2840290; hg19: chr9-16733957;