chr14-73251697-A-G

Position:

• chr14-73251697-A-G

Variant summary

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

The NM_001365906.3(PAPLN):​c.704A>G​(p.Asn235Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,461,000 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: PAPLN NM_001365906.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.40

Genes affected

PAPLN (HGNC:19262): (papilin, proteoglycan like sulfated glycoprotein) Predicted to enable metalloendopeptidase activity. Predicted to be involved in extracellular matrix organization. Predicted to be located in basement membrane. Predicted to be active in extracellular matrix. [provided by Alliance of Genome Resources, Apr 2022]

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
PAPLN	NM_001365906.3	c.704A>G	p.Asn235Ser	missense_variant	9/27	ENST00000644200.2	NP_001352835.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PAPLN	ENST00000644200.2	c.704A>G	p.Asn235Ser	missense_variant	9/27		NM_001365906.3	ENSP00000495882	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000548 AC: 8 AN: 1461000 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 726834

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000766

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000540

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.00000378

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 04, 2024

The c.623A>G (p.N208S) alteration is located in exon 8 (coding exon 7) of the PAPLN gene. This alteration results from a A to G substitution at nucleotide position 623, causing the asparagine (N) at amino acid position 208 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Uncertain	0.069	D
BayesDel_noAF	Benign	-0.14
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	T;.;T;.
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.93	D;D;.;D
M_CAP	Benign	0.047	D
MetaRNN	Uncertain	0.70	D;D;D;D
MetaSVM	Uncertain	0.095	D
MutationAssessor	Pathogenic	4.0	H;.;H;H
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Benign	0.47	T
PROVEAN	Pathogenic	-4.7	.;D;D;D
REVEL	Uncertain	0.39
Sift	Uncertain	0.0090	.;D;D;D
Sift4G	Uncertain	0.037	.;D;D;D
Polyphen		0.63	P;D;P;P
Vest4		0.78, 0.73, 0.69
MVP		0.71
MPC		0.28
ClinPred		0.96	D
GERP RS		4.5
Varity_R		0.63
gMVP		0.74

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: rs1454679379; hg19: chr14-73718405; COSMIC: COSV53716935; COSMIC: COSV53716935;