rs746431351

Variant names:

• chr10-70598585-C-A
• rs746431351
• NM_001083116.3:c.1136G>T

Your query was ambiguous. Multiple possible variants found:

• chr10-70598585-C-A
• chr10-70598585-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 5P and 2B. PM1 PM2 PP2 BP4_Moderate

The NM_001083116.3(PRF1):​c.1136G>T​(p.Arg379Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R379Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PRF1 NM_001083116.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.312
• Publications: 0 publications found

Genes affected

PRF1 (HGNC:9360): (perforin 1) This gene encodes a protein with structural similarities to complement component C9 that is important in immunity. This protein forms membrane pores that allow the release of granzymes and subsequent cytolysis of target cells. Whether pore formation occurs in the plasma membrane of target cells or in an endosomal membrane inside target cells is subject to debate. Mutations in this gene are associated with a variety of human disease including diabetes, multiple sclerosis, lymphomas, autoimmune lymphoproliferative syndrome (ALPS), aplastic anemia, and familial hemophagocytic lymphohistiocytosis type 2 (FHL2), a rare and lethal autosomal recessive disorder of early childhood. [provided by RefSeq, Aug 2017]

PALD1 (HGNC:23530): (phosphatase domain containing paladin 1) Predicted to enable protein tyrosine phosphatase activity. Predicted to be involved in peptidyl-tyrosine dephosphorylation. Located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_001083116.3
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 43 curated pathogenic missense variants (we use a threshold of 10). The gene has 4 curated benign missense variants. Gene score misZ: 0.016731 (below the threshold of 3.09). Trascript score misZ: 0.68523 (below the threshold of 3.09). GenCC associations: The gene is linked to lymphoma, non-Hodgkin, familial, familial hemophagocytic lymphohistiocytosis 2, fatal post-viral neurodegenerative disorder, hereditary hemophagocytic lymphohistiocytosis.
• BP4: Computational evidence support a benign effect (MetaRNN=0.23806506).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRF1	NM_001083116.3	c.1136G>T	p.Arg379Leu	missense_variant	Exon 3 of 3	ENST00000441259.2	NP_001076585.1
PRF1	NM_005041.6	c.1136G>T	p.Arg379Leu	missense_variant	Exon 3 of 3		NP_005032.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRF1	ENST00000441259.2	c.1136G>T	p.Arg379Leu	missense_variant	Exon 3 of 3	5	NM_001083116.3	ENSP00000398568.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460188 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726452

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44664

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26088

East Asian (EAS) AF: 0.00 AC: 0 AN: 39682

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86206

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52240

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111754

Other (OTH) AF: 0.00 AC: 0 AN: 60318

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Feb 26, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1136G>T (p.R379L) alteration is located in exon 3 (coding exon 2) of the PRF1 gene. This alteration results from a G to T substitution at nucleotide position 1136, causing the arginine (R) at amino acid position 379 to be replaced by a leucine (L). 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	0.11
BayesDel_addAF	Uncertain	0.064	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	D;D
Eigen	Benign	-0.076
Eigen_PC	Benign	-0.069
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.80	.;T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.24	T;T
MetaSVM	Uncertain	-0.061	T
MutationAssessor	Uncertain	2.7	M;M
PhyloP100		0.31
PrimateAI	Benign	0.25	T
PROVEAN	Uncertain	-3.1	D;D
REVEL	Uncertain	0.42
Sift	Uncertain	0.029	D;D
Sift4G	Uncertain	0.012	D;D
Polyphen		0.69	P;P
Vest4		0.32
MutPred		0.35		Loss of MoRF binding (P = 0.011);Loss of MoRF binding (P = 0.011);
MVP		0.89
MPC		0.23
ClinPred		0.83	D
GERP RS		3.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.21
gMVP		0.44
Mutation Taster		=79/21	polymorphism

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: rs746431351; hg19: chr10-72358341;