chr14-20801869-C-A

Position:

• chr14-20801869-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_002933.5(RNASE1):​c.200G>T​(p.Arg67Leu) 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 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RNASE1 NM_002933.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.35

Genes affected

RNASE1 (HGNC:10044): (ribonuclease A family member 1, pancreatic) This gene encodes a member of the pancreatic-type of secretory ribonucleases, a subset of the ribonuclease A superfamily. The encoded endonuclease cleaves internal phosphodiester RNA bonds on the 3'-side of pyrimidine bases. It prefers poly(C) as a substrate and hydrolyzes 2',3'-cyclic nucleotides, with a pH optimum near 8.0. The encoded protein is monomeric and more commonly acts to degrade ds-RNA over ss-RNA. Alternative splicing occurs at this locus and four transcript variants encoding the same protein have been identified. [provided by RefSeq, Jul 2008]

LOC105370397 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM1: In a mutagenesis_site Substantially decreases binding affinity for RNH1 but maintains high conformational stability; when associated with D-95, A-116, D-117 and D-119. (size 0) in uniprot entity RNAS1_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.23103794).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RNASE1	NM_002933.5	c.200G>T	p.Arg67Leu	missense_variant	2/2	ENST00000397967.5
LOC105370397	XR_007064063.1	n.277-7970C>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RNASE1	ENST00000397967.5	c.200G>T	p.Arg67Leu	missense_variant	2/2	1	NM_002933.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461892 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.061	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	6.9
DANN	Benign	0.95
DEOGEN2	Benign	0.42	T;T;T;T;T
Eigen	Benign	-0.68
Eigen_PC	Benign	-0.80
FATHMM_MKL	Benign	0.049	N
LIST_S2	Benign	0.67	.;.;.;T;T
M_CAP	Benign	0.083	D
MetaRNN	Benign	0.23	T;T;T;T;T
MetaSVM	Benign	-0.86	T
MutationAssessor	Pathogenic	3.1	M;M;M;.;M
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.22	T
PROVEAN	Uncertain	-3.8	D;D;D;D;D
REVEL	Benign	0.25
Sift	Benign	0.16	T;T;T;T;T
Sift4G	Benign	0.59	T;T;T;T;T
Polyphen		0.038	B;B;B;.;B
Vest4		0.21
MutPred		0.58		Gain of catalytic residue at K69 (P = 0.0015);Gain of catalytic residue at K69 (P = 0.0015);Gain of catalytic residue at K69 (P = 0.0015);.;Gain of catalytic residue at K69 (P = 0.0015);
MVP		0.75
MPC		0.23
ClinPred		0.24	T
GERP RS		1.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.32
gMVP		0.68

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: rs1804215; hg19: chr14-21270028;