2-44339365-TAGAGAGAG-TAGAGAGAGAG

Position:

• chr2-44339365-TAGAGAGAG-TAGAGAGAGAG

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP6_Moderate

The NM_001171613.2(PREPL):​c.486-3_486-2insCT variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000281 in 1,524,730 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00031 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00028 (0 hom.)
• Consequence: PREPL NM_001171613.2 splice_region, splice_polypyrimidine_tract, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0230

Genes affected

PREPL (HGNC:30228): (prolyl endopeptidase like) The protein encoded by this gene belongs to the prolyl oligopeptidase subfamily of serine peptidases. Mutations in this gene have been associated with hypotonia-cystinuria syndrome, also known as the 2p21 deletion syndrome. Several alternatively spliced transcript variants encoding either the same or different isoforms have been described for this gene.[provided by RefSeq, Jan 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 2-44339365-T-TAG is Benign according to our data. Variant chr2-44339365-T-TAG is described in ClinVar as [Likely_benign]. Clinvar id is 478320.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PREPL	NM_001171613.2	c.486-3_486-2insCT		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000409411.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PREPL	ENST00000409411.6	c.486-3_486-2insCT		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_001171613.2	P4

Frequencies

GnomAD3 genomes AF: 0.000314 AC: 47 AN: 149678 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000147

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000400

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000775

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00201

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000134

Gnomad OTH AF: 0.000974

GnomAD4 exome AF: 0.000277 AC: 381 AN: 1374948 Hom.: 0 Cov.: 31 AF XY: 0.000289 AC XY: 198 AN XY: 684174

Gnomad4 AFR exome AF: 0.000318

Gnomad4 AMR exome AF: 0.00123

Gnomad4 ASJ exome AF: 0.0000408

Gnomad4 EAS exome AF: 0.000218

Gnomad4 SAS exome AF: 0.000274

Gnomad4 FIN exome AF: 0.00158

Gnomad4 NFE exome AF: 0.000182

Gnomad4 OTH exome AF: 0.000283

GnomAD4 genome AF: 0.000314 AC: 47 AN: 149782 Hom.: 0 Cov.: 32 AF XY: 0.000425 AC XY: 31 AN XY: 73018

Gnomad4 AFR AF: 0.000146

Gnomad4 AMR AF: 0.000400

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000777

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00201

Gnomad4 NFE AF: 0.000134

Gnomad4 OTH AF: 0.000963

Bravo AF: 0.000174

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Myasthenic syndrome, congenital, 22 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 22, 2024

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs750292662; hg19: chr2-44566504;