rs7938837

Positions:

• chr11-5341877-C-G
• chr11-5341877-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000292896.3(HBE1):​c.-266-71721G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.112 in 152,140 control chromosomes in the GnomAD database, including 1,776 homozygotes. 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 0.11 (1776 hom., cov: 32)
• Consequence: HBE1 ENST00000292896.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.71

Genes affected

HBE1 (HGNC:4830): (hemoglobin subunit epsilon 1) The epsilon globin gene (HBE) is normally expressed in the embryonic yolk sac: two epsilon chains together with two zeta chains (an alpha-like globin) constitute the embryonic hemoglobin Hb Gower I; two epsilon chains together with two alpha chains form the embryonic Hb Gower II. Both of these embryonic hemoglobins are normally supplanted by fetal, and later, adult hemoglobin. The five beta-like globin genes are found within a 45 kb cluster on chromosome 11 in the following order: 5'-epsilon - G-gamma - A-gamma - delta - beta-3' [provided by RefSeq, Jul 2008]

HBG2 (HGNC:4832): (hemoglobin subunit gamma 2) The gamma globin genes (HBG1 and HBG2) are normally expressed in the fetal liver, spleen and bone marrow. Two gamma chains together with two alpha chains constitute fetal hemoglobin (HbF) which is normally replaced by adult hemoglobin (HbA) at birth. In some beta-thalassemias and related conditions, gamma chain production continues into adulthood. The two types of gamma chains differ at residue 136 where glycine is found in the G-gamma product (HBG2) and alanine is found in the A-gamma product (HBG1). The former is predominant at birth. The order of the genes in the beta-globin cluster is: 5'- epsilon -- gamma-G -- gamma-A -- delta -- beta--3'. [provided by RefSeq, Jul 2008]

OR51B5 (HGNC:19599): (olfactory receptor family 51 subfamily B member 5) Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome. The nomenclature assigned to the olfactory receptor genes and proteins for this organism is independent of other organisms. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.276 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR51B5	NR_038321.2	n.339-515G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HBE1	ENST00000292896.3	c.-266-71721G>C		intron_variant		1		P1
HBE1	ENST00000380237.5	c.-309-59926G>C		intron_variant		1		P1
HBG2	ENST00000380252.6	c.-73-87363G>C		intron_variant		3

Frequencies

GnomAD3 genomes AF: 0.112 AC: 17027 AN: 152022 Hom.: 1776 Cov.: 32

Gnomad AFR AF: 0.281

Gnomad AMI AF: 0.00110

Gnomad AMR AF: 0.0597

Gnomad ASJ AF: 0.0702

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.0125

Gnomad FIN AF: 0.0511

Gnomad MID AF: 0.0190

Gnomad NFE AF: 0.0511

Gnomad OTH AF: 0.0798

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

GnomAD4 genome AF: 0.112 AC: 17036 AN: 152140 Hom.: 1776 Cov.: 32 AF XY: 0.107 AC XY: 7957 AN XY: 74372

Gnomad4 AFR AF: 0.281

Gnomad4 AMR AF: 0.0595

Gnomad4 ASJ AF: 0.0702

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.0121

Gnomad4 FIN AF: 0.0511

Gnomad4 NFE AF: 0.0511

Gnomad4 OTH AF: 0.0784

Alfa AF: 0.0420 Hom.: 37

Bravo AF: 0.123

Asia WGS AF: 0.0240 AC: 86 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	3.6
DANN	Benign	0.61

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

Publications

LitVar

Other links and lift over

dbSNP: rs7938837; hg19: chr11-5363107;