20-44355854-G-T
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate
The NM_175914.5(HNF4A):c.49+1G>T variant causes a splice donor, intron change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Consequence
NM_175914.5 splice_donor, intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 12 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
HNF4A | ENST00000316673.9 | c.49+1G>T | splice_donor_variant, intron_variant | Intron 1 of 9 | 1 | NM_175914.5 | ENSP00000315180.4 | |||
HNF4A | ENST00000457232.5 | c.49+1G>T | splice_donor_variant, intron_variant | Intron 1 of 9 | 1 | ENSP00000396216.1 | ||||
HNF4A | ENST00000609795.5 | c.49+1G>T | splice_donor_variant, intron_variant | Intron 1 of 7 | 1 | ENSP00000476609.1 | ||||
HNF4A | ENST00000609262.5 | c.-183+1G>T | splice_donor_variant, intron_variant | Intron 1 of 3 | 1 | ENSP00000476310.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Cov.: 30
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Maturity-onset diabetes of the young type 1 Pathogenic:1
A previously undescribed nucleotide variant creates an alteration of the canonical splice site c.49+1G>T in the HNF4A gene. The variant was observed in heterozygous state in an individual affected with congenital hyperinsulinism. Loss-of-function variants are reported in patients with MODY, type I, 125850. The variant is not present in population database (gnomAD no frequency). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as likely pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.