ENST00000458236.1:n.1557G>C

Variant names:

• chr6-29736306-C-G
• rs1736916
• ENST00000458236.1:n.1557G>C

Variant summary

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

The ENST00000458236.1(HLA-F-AS1):​n.1557G>C variant causes a non coding transcript exon 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.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: HLA-F-AS1 ENST00000458236.1 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.607
• Publications: 6 publications found

Genes affected

HLA-F-AS1 (HGNC:26645): (HLA-F antisense RNA 1)

HLA-F (HGNC:4963): (major histocompatibility complex, class I, F) This gene belongs to the HLA class I heavy chain paralogues. It encodes a non-classical heavy chain that forms a heterodimer with a beta-2 microglobulin light chain, with the heavy chain anchored in the membrane. Unlike most other HLA heavy chains, this molecule is localized in the endoplasmic reticulum and Golgi apparatus, with a small amount present at the cell surface in some cell types. It contains a divergent peptide-binding groove, and is thought to bind a restricted subset of peptides for immune presentation. This gene exhibits few polymorphisms. Multiple transcript variants encoding different isoforms have been found for this gene. These variants lack a coding exon found in transcripts from other HLA paralogues due to an altered splice acceptor site, resulting in a shorter cytoplasmic domain. [provided by RefSeq, Jul 2008]

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=-0.95).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HLA-F-AS1	NR_026972.1	n.1235+1660G>C		intron_variant	Intron 4 of 5
HLA-F-AS1	NR_026973.1	n.151-9167G>C		intron_variant	Intron 1 of 1
HLA-F	XM_017010813.2	c.1159-1816C>G		intron_variant	Intron 7 of 7		XP_016866302.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HLA-F-AS1	ENST00000458236.1	n.1557G>C		non_coding_transcript_exon_variant	Exon 6 of 6	6
HLA-F	ENST00000465459.2	c.404-1816C>G		intron_variant	Intron 3 of 4	6		ENSP00000486947.1
HLA-F-AS1	ENST00000399247.6	n.1235+1660G>C		intron_variant	Intron 4 of 5	6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 247154 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 141520

African (AFR) AF: 0.00 AC: 0 AN: 6086

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 7082

East Asian (EAS) AF: 0.00 AC: 0 AN: 8708

South Asian (SAS) AF: 0.00 AC: 0 AN: 48520

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10256

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2484

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 136872

Other (OTH) AF: 0.00 AC: 0 AN: 11866

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	3.7
DANN	Benign	0.31
PhyloP100		-0.61

Splicing

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

Other links and lift over

dbSNP: rs1736916; hg19: chr6-29704083;