2-44323389-T-G

Position:

• chr2-44323389-T-G

Variant summary

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

The NM_001171613.2(PREPL):​c.1502A>C​(p.Asn501Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,106 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: PREPL NM_001171613.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.22

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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PREPL	NM_001171613.2	c.1502A>C	p.Asn501Thr	missense_variant	11/14	ENST00000409411.6	NP_001165084.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PREPL	ENST00000409411.6	c.1502A>C	p.Asn501Thr	missense_variant	11/14	1	NM_001171613.2	ENSP00000387095	P4

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152106 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152106 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74308

Gnomad4 AFR AF: 0.00

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: 0.0000147

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	.;.;.;T;T;T;T;.;.
Eigen	Benign	0.035
Eigen_PC	Benign	0.14
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.91	D;.;.;.;.;.;D;D;D
M_CAP	Benign	0.014	T
MetaRNN	Uncertain	0.51	D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.21	.;.;.;N;N;N;N;.;.
MutationTaster	Benign	0.99	D;D;D;D;D;D;D;D;N
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-3.8	D;D;D;D;D;D;D;N;N
REVEL	Benign	0.13
Sift	Uncertain	0.019	D;D;D;D;D;D;D;D;D
Sift4G	Benign	0.25	T;T;T;T;T;T;T;T;T
Polyphen		0.59, 0.13, 1.0	.;.;.;P;P;P;P;B;D
Vest4		0.66
MutPred		0.64		.;.;.;Gain of glycosylation at N590 (P = 0.0263);Gain of glycosylation at N590 (P = 0.0263);Gain of glycosylation at N590 (P = 0.0263);Gain of glycosylation at N590 (P = 0.0263);.;.;
MVP		0.22
MPC		0.0080
ClinPred		0.96	D
GERP RS		4.2
Varity_R		0.33
gMVP		0.58

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: rs75128515; hg19: chr2-44550528;