chr17-37744827-C-G

Variant names:

• chr17-37744827-C-G
• rs1052557621
• NM_000458.4:c.58G>C

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The NM_000458.4(HNF1B):​c.58G>C​(p.Gly20Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000204 in 146,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely risk allele (★).

• Frequency: Genomes: 𝑓 0.000020 (0 hom., cov: 32)
• Consequence: HNF1B NM_000458.4 missense
• Clinical Significance: Likely risk allele criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.37

Genes affected

HNF1B (HGNC:11630): (HNF1 homeobox B) This gene encodes a member of the homeodomain-containing superfamily of transcription factors. The protein binds to DNA as either a homodimer, or a heterodimer with the related protein hepatocyte nuclear factor 1-alpha. The gene has been shown to function in nephron development, and regulates development of the embryonic pancreas. Mutations in this gene result in renal cysts and diabetes syndrome and noninsulin-dependent diabetes mellitus, and expression of this gene is altered in some types of cancer. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.967
• PP5: Variant 17-37744827-C-G is Pathogenic according to our data. Variant chr17-37744827-C-G is described in ClinVar as [Likely_risk_allele]. Clinvar id is 1802529.Status of the report is criteria_provided_single_submitter, 1 stars. We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_risk_allele=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HNF1B	NM_000458.4	c.58G>C	p.Gly20Arg	missense_variant	Exon 1 of 9	ENST00000617811.5	NP_000449.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HNF1B	ENST00000617811.5	c.58G>C	p.Gly20Arg	missense_variant	Exon 1 of 9	1	NM_000458.4	ENSP00000480291.1
HNF1B	ENST00000621123.4	c.58G>C	p.Gly20Arg	missense_variant	Exon 1 of 9	1		ENSP00000482711.1
HNF1B	ENST00000613727.4	c.58G>C	p.Gly20Arg	missense_variant	Exon 1 of 7	1		ENSP00000477524.1
HNF1B	ENST00000614313.4	c.58G>C	p.Gly20Arg	missense_variant	Exon 1 of 8	5		ENSP00000482529.1

Frequencies

GnomAD3 genomes AF: 0.0000204 AC: 3 AN: 146806 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000752

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 35

GnomAD4 genome AF: 0.0000204 AC: 3 AN: 146806 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 71398

Gnomad4 AFR AF: 0.0000752

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Significance: Likely risk allele

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Maturity onset diabetes mellitus in young Pathogenic:1

-

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Significance: Likely risk allele

Review Status: criteria provided, single submitter

Collection Method: research

HNF1B gene mutations are associated with early onset diabetes and pancreatic atrophy. It is also associated with multiple renal manifestations including renal cysts, Tubulointerstitial disease, glomerulocystic disease, renal hypoplasia, hypomagnesemia. However no sufficient evidence is found to ascertain the role of this particular variant rs1052557621, yet. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.89
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.99	D;.;D;D;.;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Pathogenic	0.53	D
MetaRNN	Pathogenic	0.97	D;D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	2.9	M;M;.;.;.;.
PrimateAI	Pathogenic	0.82	D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		1.0	D;.;.;.;.;.
Vest4		0.86
MutPred		0.84		Gain of solvent accessibility (P = 0.0055);Gain of solvent accessibility (P = 0.0055);Gain of solvent accessibility (P = 0.0055);Gain of solvent accessibility (P = 0.0055);Gain of solvent accessibility (P = 0.0055);Gain of solvent accessibility (P = 0.0055);
MVP		0.91
ClinPred		0.99	D
GERP RS		4.6
Varity_R		0.60
gMVP		0.83

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: rs1052557621; hg19: chr17-36104818;