chr17-76470891-T-G

Position:

• chr17-76470891-T-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The ENST00000590168.5(RHBDF2):​n.2665A>C variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0143 in 152,258 control chromosomes in the GnomAD database, including 51 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.014 (51 hom., cov: 34)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RHBDF2 ENST00000590168.5 non_coding_transcript_exon
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.125

Genes affected

RHBDF2 (HGNC:20788): (rhomboid 5 homolog 2) Predicted to enable protein transporter activity. Predicted to be involved in negative regulation of protein secretion and regulation of epidermal growth factor receptor signaling pathway. Located in plasma membrane. Implicated in palmoplantar keratoderma-esophageal carcinoma syndrome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 17-76470891-T-G is Benign according to our data. Variant chr17-76470891-T-G is described in ClinVar as [Benign]. Clinvar id is 369229.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0143 (2170/152258) while in subpopulation AFR AF= 0.0489 (2030/41526). AF 95% confidence interval is 0.0471. There are 51 homozygotes in gnomad4. There are 1027 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 2170 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RHBDF2	NM_001005498.4			downstream_gene_variant		ENST00000675367.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RHBDF2	ENST00000590168.5	n.2665A>C		non_coding_transcript_exon_variant	12/12	1
RHBDF2	ENST00000675367.1			downstream_gene_variant			NM_001005498.4	P1
RHBDF2	ENST00000313080.8			downstream_gene_variant		1

Frequencies

GnomAD3 genomes AF: 0.0143 AC: 2171 AN: 152140 Hom.: 51 Cov.: 34

Gnomad AFR AF: 0.0490

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00661

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.0119

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 30 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 26

Gnomad4 EAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

GnomAD4 genome AF: 0.0143 AC: 2170 AN: 152258 Hom.: 51 Cov.: 34 AF XY: 0.0138 AC XY: 1027 AN XY: 74448

Gnomad4 AFR AF: 0.0489

Gnomad4 AMR AF: 0.00660

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.0118

Alfa AF: 0.00322 Hom.: 10

Bravo AF: 0.0168

Asia WGS AF: 0.00231 AC: 8 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Palmoplantar keratoderma-esophageal carcinoma syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.96
DANN	Benign	0.23

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs7221225; hg19: chr17-74466973;