chr9-69151771-G-C

Variant names:

• chr9-69151771-G-C
• rs374563251
• ENST00000642889.1:c.447G>C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The ENST00000642889.1(ENSG00000285130):​c.447G>C​(p.Gln149His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000185 in 1,079,824 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/2 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q149Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000019 (0 hom.)
• Consequence: ENSG00000285130 ENST00000642889.1 missense, splice_region
• Scores: Splicing: ADA: 0.01170
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.47

Genes affected

ENSG00000285130 (HGNC:):

TJP2 (HGNC:11828): (tight junction protein 2) This gene encodes a zonula occluden that is a member of the membrane-associated guanylate kinase homolog family. The encoded protein functions as a component of the tight junction barrier in epithelial and endothelial cells and is necessary for proper assembly of tight junctions. Mutations in this gene have been identified in patients with hypercholanemia, and genomic duplication of a 270 kb region including this gene causes autosomal dominant deafness-51. Alternatively spliced transcripts encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Nov 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TJP2	NM_001369871.1	c.-128G>C		splice_region_variant	Exon 2 of 25		NP_001356800.1
TJP2	NM_001369870.1	c.-10G>C		splice_region_variant	Exon 2 of 24		NP_001356799.1
TJP2	NM_001170414.2	c.-10G>C		splice_region_variant	Exon 2 of 22		NP_001163885.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENSG00000285130	ENST00000642889.1	c.447G>C	p.Gln149His	missense_variant, splice_region_variant	Exon 3 of 25			ENSP00000493780.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000185 AC: 2 AN: 1079824 Hom.: 0 Cov.: 30 AF XY: 0.00000196 AC XY: 1 AN XY: 509758

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000217

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.33
CADD	Uncertain	25
DANN	Benign	0.94
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.27	T;T;T
MetaRNN	Uncertain	0.64	D;D;D
GERP RS		4.8

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.012
dbscSNV1_RF	Benign	0.024

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

Publications

LitVar

Other links and lift over

dbSNP: rs374563251; hg19: chr9-71766687;