rs11820733

Positions:

• chr11-5260034-G-A

Variant summary

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

The ENST00000380252.6(HBG2):​c.-73-5520C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0982 in 152,008 control chromosomes in the GnomAD database, including 2,258 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 0.098 (2258 hom., cov: 32)
• Consequence: HBG2 ENST00000380252.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.227

Genes affected

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]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.324 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HBG2	ENST00000380252.6	c.-73-5520C>T		intron_variant		3
	ENST00000646569.1	n.59-497C>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes AF: 0.0980 AC: 14890 AN: 151890 Hom.: 2255 Cov.: 32

Gnomad AFR AF: 0.328

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0435

Gnomad ASJ AF: 0.0138

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00394

Gnomad FIN AF: 0.00349

Gnomad MID AF: 0.0127

Gnomad NFE AF: 0.00641

Gnomad OTH AF: 0.0698

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

GnomAD4 genome AF: 0.0982 AC: 14920 AN: 152008 Hom.: 2258 Cov.: 32 AF XY: 0.0944 AC XY: 7018 AN XY: 74318

Gnomad4 AFR AF: 0.328

Gnomad4 AMR AF: 0.0435

Gnomad4 ASJ AF: 0.0138

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00353

Gnomad4 FIN AF: 0.00349

Gnomad4 NFE AF: 0.00641

Gnomad4 OTH AF: 0.0691

Alfa AF: 0.0617 Hom.: 144

Bravo AF: 0.116

Asia WGS AF: 0.0210 AC: 74 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	5.8
DANN	Benign	0.72

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: rs11820733; hg19: chr11-5281264;