rs137853234

Variant names:

• chr16-72060463-T-C
• rs137853234
• NM_005143.5:c.794T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_005143.5(HP):​c.794T>C​(p.Ile265Thr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 30)
• Consequence: HP NM_005143.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.46
• Publications: 0 publications found

Genes affected

HP (HGNC:5141): (haptoglobin) This gene encodes a preproprotein, which is processed to yield both alpha and beta chains, which subsequently combine as a tetramer to produce haptoglobin. Haptoglobin functions to bind free plasma hemoglobin, which allows degradative enzymes to gain access to the hemoglobin, while at the same time preventing loss of iron through the kidneys and protecting the kidneys from damage by hemoglobin. Mutations in this gene and/or its regulatory regions cause ahaptoglobinemia or hypohaptoglobinemia. This gene has also been linked to diabetic nephropathy, the incidence of coronary artery disease in type 1 diabetes, Crohn's disease, inflammatory disease behavior, primary sclerosing cholangitis, susceptibility to idiopathic Parkinson's disease, and a reduced incidence of Plasmodium falciparum malaria. The protein encoded also exhibits antimicrobial activity against bacteria. A similar duplicated gene is located next to this gene on chromosome 16. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2014]

ENSG00000310525 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.957

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005143.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HP	NM_005143.5	MANE Select	c.794T>C	p.Ile265Thr	missense	Exon 7 of 7	NP_005134.1	P00738-1
	HP	NM_001126102.3		c.617T>C	p.Ile206Thr	missense	Exon 5 of 5	NP_001119574.1	P00738-2
	HP	NM_001318138.2		c.617T>C	p.Ile206Thr	missense	Exon 5 of 5	NP_001305067.1	A0A0C4DGL8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HP	ENST00000355906.10	TSL:1 MANE Select	c.794T>C	p.Ile265Thr	missense	Exon 7 of 7	ENSP00000348170.5	P00738-1
	HP	ENST00000398131.6	TSL:1	c.617T>C	p.Ile206Thr	missense	Exon 5 of 5	ENSP00000381199.2	P00738-2
	HP	ENST00000565574.5	TSL:1	c.617T>C	p.Ile206Thr	missense	Exon 5 of 5	ENSP00000454966.1	A0A0C4DGL8

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	26
DANN	Benign	0.97
DEOGEN2	Pathogenic	0.94	D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.94	D
M_CAP	Pathogenic	0.68	D
MetaRNN	Pathogenic	0.96	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.1	M
PhyloP100		6.5
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-4.1	D
REVEL	Pathogenic	0.95
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.88
MutPred		0.78		Gain of glycosylation at I265 (P = 0.0037)
MVP		1.0
MPC		0.97
ClinPred		1.0	D
GERP RS		5.1
Varity_R		0.92
gMVP		0.68

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: rs137853234; hg19: chr16-72094362;