rs35166721

Variant names:

• chr11-5234176-C-T
• rs35166721
• NM_000519.4:c.130G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000519.4(HBD):​c.130G>A​(p.Glu44Lys) variant causes a missense 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. Variant has been reported in ClinVar as other (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E44G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HBD NM_000519.4 missense
• Clinical Significance: other no assertion criteria provided O:1
• Conservation: PhyloP100: -1.15
• Publications: 1 publications found

Genes affected

HBD (HGNC:4829): (hemoglobin subunit delta) The delta (HBD) and beta (HBB) genes are normally expressed in the adult: two alpha chains plus two beta chains constitute HbA, which in normal adult life comprises about 97% of the total hemoglobin. Two alpha chains plus two delta chains constitute HbA-2, which with HbF comprises the remaining 3% of adult hemoglobin. Five beta-like globin genes are found within a 45 kb cluster on chromosome 11 in the following order: 5'-epsilon--Ggamma--Agamma--delta--beta-3'. Mutations in the delta-globin gene are associated with beta-thalassemia. [provided by RefSeq, Jul 2008]

HBD Gene-Disease associations (from GenCC):

• delta-beta-thalassemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000298932 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1479648).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HBD	NM_000519.4	c.130G>A	p.Glu44Lys	missense_variant	Exon 2 of 3	ENST00000650601.1	NP_000510.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HBD	ENST00000650601.1	c.130G>A	p.Glu44Lys	missense_variant	Exon 2 of 3		NM_000519.4	ENSP00000497529.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: other

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

HEMOGLOBIN A(2) MELBOURNE Other:1

Dec 12, 2017

OMIM

Significance: other

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.013	T;T;T;T;T
Eigen	Benign	-0.93
Eigen_PC	Benign	-0.92
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.15	T;.;.;T;T
M_CAP	Uncertain	0.087	D
MetaRNN	Benign	0.15	T;T;T;T;T
MetaSVM	Benign	-0.39	T
MutationAssessor	Benign	1.5	.;L;L;L;.
PhyloP100		-1.1
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-1.9	N;.;N;.;N
REVEL	Uncertain	0.55
Sift	Uncertain	0.0060	D;.;D;.;D
Sift4G	Benign	0.37	T;.;T;.;.
Polyphen		0.0	.;B;B;B;.
Vest4		0.28
MutPred		0.34		Gain of methylation at E44 (P = 4e-04);Gain of methylation at E44 (P = 4e-04);Gain of methylation at E44 (P = 4e-04);Gain of methylation at E44 (P = 4e-04);Gain of methylation at E44 (P = 4e-04);
MVP		0.76
MPC		0.012
ClinPred		0.28	T
GERP RS		0.075
PromoterAI		-0.0021	Neutral
Varity_R		0.46
gMVP		0.65
Mutation Taster		=0/100	disease causing

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

Other links and lift over

dbSNP: rs35166721; hg19: chr11-5255406;