4-118281129-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_003619.4(PRSS12):c.*807G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0611 in 152,172 control chromosomes in the GnomAD database, including 385 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.061 (383 hom., cov: 33)
  • Exomes 𝑓: 0.25 (2 hom.)
• Consequence: PRSS12 NM_003619.4 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.42

Genes affected

PRSS12 (HGNC:9477): (serine protease 12) This gene encodes a member of the trypsin family of serine proteases and contains a signal peptide, a proline-rich region, a Kringle domain, four scavenger receptor cysteine-rich domains, and a trypsin-like serine protease domain. The protein, sometimes referred to as neurotrypsin or motopsin, is secreted from neuronal cells and localizes to the synaptic cleft. Studies in mice show that this protein cleaves a protein, agrin, that is important for the formation and maintenance of exitatory synapses. Defects in this gene cause a form of autosomal recessive cognitive impairment (MRT1). [provided by RefSeq, Jul 2017]

SNHG8 (HGNC:33098): (small nucleolar RNA host gene 8)

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 4-118281129-C-T is Benign according to our data. Variant chr4-118281129-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 347378.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0905 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRSS12	NM_003619.4	c.*807G>A		3_prime_UTR_variant	13/13	ENST00000296498.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRSS12	ENST00000296498.3	c.*807G>A		3_prime_UTR_variant	13/13	1	NM_003619.4	P1
SNHG8	ENST00000654083.2	n.1979C>T		non_coding_transcript_exon_variant	3/3

Frequencies

GnomAD3 genomes AF: 0.0611 AC: 9295 AN: 152010 Hom.: 383 Cov.: 33

Gnomad AFR AF: 0.0159

Gnomad AMI AF: 0.0495

Gnomad AMR AF: 0.0339

Gnomad ASJ AF: 0.0994

Gnomad EAS AF: 0.000770

Gnomad SAS AF: 0.0447

Gnomad FIN AF: 0.102

Gnomad MID AF: 0.0791

Gnomad NFE AF: 0.0925

Gnomad OTH AF: 0.0546

GnomAD4 exome AF: 0.250 AC: 11 AN: 44 Hom.: 2 Cov.: 0 AF XY: 0.208 AC XY: 5 AN XY: 24

Gnomad4 AFR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.500

Gnomad4 FIN exome AF: 0.346

Gnomad4 NFE exome AF: 0.0714

GnomAD4 genome AF: 0.0611 AC: 9292 AN: 152128 Hom.: 383 Cov.: 33 AF XY: 0.0590 AC XY: 4388 AN XY: 74364

Gnomad4 AFR AF: 0.0159

Gnomad4 AMR AF: 0.0338

Gnomad4 ASJ AF: 0.0994

Gnomad4 EAS AF: 0.000772

Gnomad4 SAS AF: 0.0445

Gnomad4 FIN AF: 0.102

Gnomad4 NFE AF: 0.0925

Gnomad4 OTH AF: 0.0545

Alfa AF: 0.0855 Hom.: 285

Bravo AF: 0.0539

Asia WGS AF: 0.0180 AC: 62 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Intellectual disability, autosomal recessive 1 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
Cadd	Benign	0.83
Dann	Benign	0.80

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: rs17516164; hg19: chr4-119202284;