19-11436132-G-T

Variant names:

• chr19-11436132-G-T
• rs754740617
• NM_001289104.2:c.15G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001289104.2(PRKCSH):​c.15G>T​(p.Leu5Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,020 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L5L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PRKCSH NM_001289104.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.105
• Publications: 0 publications found

Genes affected

PRKCSH (HGNC:9411): (PRKCSH beta subunit of glucosidase II) This gene encodes the beta-subunit of glucosidase II, an N-linked glycan-processing enzyme in the endoplasmic reticulum. The encoded protein is an acidic phosphoprotein known to be a substrate for protein kinase C. Mutations in this gene have been associated with the autosomal dominant polycystic liver disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

PRKCSH Gene-Disease associations (from GenCC):

• polycystic liver disease 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=0.105 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001289104.2. 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
	PRKCSH	NM_001289104.2	MANE Select	c.15G>T	p.Leu5Leu	synonymous	Exon 2 of 18	NP_001276033.1	K7ELL7
	PRKCSH	NM_001289103.2		c.15G>T	p.Leu5Leu	synonymous	Exon 2 of 18	NP_001276032.1	K7ELL7
	PRKCSH	NM_001379608.1		c.15G>T	p.Leu5Leu	synonymous	Exon 2 of 18	NP_001366537.1	P14314-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKCSH	ENST00000677123.1	MANE Select	c.15G>T	p.Leu5Leu	synonymous	Exon 2 of 18	ENSP00000503163.1	K7ELL7
	PRKCSH	ENST00000592741.5	TSL:1	c.15G>T	p.Leu5Leu	synonymous	Exon 2 of 18	ENSP00000466134.1	K7ELL7
	PRKCSH	ENST00000589838.5	TSL:1	c.15G>T	p.Leu5Leu	synonymous	Exon 1 of 17	ENSP00000465461.1	P14314-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456020 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 724440

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33392

American (AMR) AF: 0.00 AC: 0 AN: 44506

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.00 AC: 0 AN: 39552

South Asian (SAS) AF: 0.00 AC: 0 AN: 85930

European-Finnish (FIN) AF: 0.0000203 AC: 1 AN: 49274

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5746

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111216

Other (OTH) AF: 0.00 AC: 0 AN: 60286

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	2.2
DANN	Benign	0.69
PhyloP100		0.10
PromoterAI		-0.031	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.2

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: rs754740617; hg19: chr19-11546953;