19-35281996-A-G

Position:

• chr19-35281996-A-G

Variant summary

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

The ENST00000598398.5(HAMP):​c.-84-498A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.208 in 152,150 control chromosomes in the GnomAD database, including 3,489 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.21 (3489 hom., cov: 33)
• Consequence: HAMP ENST00000598398.5 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.01

Genes affected

HAMP (HGNC:15598): (hepcidin antimicrobial peptide) The product encoded by this gene is involved in the maintenance of iron homeostasis, and it is necessary for the regulation of iron storage in macrophages, and for intestinal iron absorption. The preproprotein is post-translationally cleaved into mature peptides of 20, 22 and 25 amino acids, and these active peptides are rich in cysteines, which form intramolecular bonds that stabilize their beta-sheet structures. These peptides exhibit antimicrobial activity against bacteria and fungi. Mutations in this gene cause hemochromatosis type 2B, also known as juvenile hemochromatosis, a disease caused by severe iron overload that results in cardiomyopathy, cirrhosis, and endocrine failure. [provided by RefSeq, Oct 2014]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.231 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
HAMP	ENST00000598398.5	c.-84-498A>G		intron_variant		2		P1

Frequencies

GnomAD3 genomes AF: 0.208 AC: 31668 AN: 152032 Hom.: 3494 Cov.: 33

Gnomad AFR AF: 0.185

Gnomad AMI AF: 0.281

Gnomad AMR AF: 0.172

Gnomad ASJ AF: 0.189

Gnomad EAS AF: 0.0169

Gnomad SAS AF: 0.219

Gnomad FIN AF: 0.267

Gnomad MID AF: 0.237

Gnomad NFE AF: 0.234

Gnomad OTH AF: 0.235

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

GnomAD4 genome AF: 0.208 AC: 31669 AN: 152150 Hom.: 3489 Cov.: 33 AF XY: 0.208 AC XY: 15483 AN XY: 74372

Gnomad4 AFR AF: 0.185

Gnomad4 AMR AF: 0.172

Gnomad4 ASJ AF: 0.189

Gnomad4 EAS AF: 0.0170

Gnomad4 SAS AF: 0.218

Gnomad4 FIN AF: 0.267

Gnomad4 NFE AF: 0.234

Gnomad4 OTH AF: 0.232

Alfa AF: 0.226 Hom.: 4181

Bravo AF: 0.196

Asia WGS AF: 0.137 AC: 475 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary hemochromatosis Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 18, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.27
DANN	Benign	0.19

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs10421768; hg19: chr19-35772899;