rs2071198

Positions:

• chr20-44401844-A-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_175914.5(HNF4A):​c.50-4214A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00428 in 152,184 control chromosomes in the GnomAD database, including 7 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 0.0043 (7 hom., cov: 32)
• Consequence: HNF4A NM_175914.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.571

Genes affected

HNF4A (HGNC:5024): (hepatocyte nuclear factor 4 alpha) The protein encoded by this gene is a nuclear transcription factor which binds DNA as a homodimer. The encoded protein controls the expression of several genes, including hepatocyte nuclear factor 1 alpha, a transcription factor which regulates the expression of several hepatic genes. This gene may play a role in development of the liver, kidney, and intestines. Mutations in this gene have been associated with monogenic autosomal dominant non-insulin-dependent diabetes mellitus type I. Alternative splicing of this gene results in multiple transcript variants encoding several different isoforms. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00428 (651/152184) while in subpopulation EAS AF= 0.0346 (178/5150). AF 95% confidence interval is 0.0304. There are 7 homozygotes in gnomad4. There are 319 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 651 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HNF4A	NM_175914.5	c.50-4214A>T		intron_variant		ENST00000316673.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HNF4A	ENST00000316673.9	c.50-4214A>T		intron_variant		1	NM_175914.5

Frequencies

GnomAD3 genomes AF: 0.00428 AC: 651 AN: 152066 Hom.: 7 Cov.: 32

Gnomad AFR AF: 0.0102

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00118

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0349

Gnomad SAS AF: 0.00414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00382

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

GnomAD4 genome AF: 0.00428 AC: 651 AN: 152184 Hom.: 7 Cov.: 32 AF XY: 0.00429 AC XY: 319 AN XY: 74392

Gnomad4 AFR AF: 0.0102

Gnomad4 AMR AF: 0.00118

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0346

Gnomad4 SAS AF: 0.00415

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00378

Alfa AF: 0.00243 Hom.: 0

Bravo AF: 0.00429

Asia WGS AF: 0.0330 AC: 115 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.51
DANN	Benign	0.63

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: rs2071198; hg19: chr20-43030484;