11-6600994-G-A

Variant names:

• chr11-6600994-G-A
• rs766876049
• NM_015324.4:c.979C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_015324.4(RRP8):​c.979C>T​(p.Arg327Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000607 in 1,614,042 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R327Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000064 (0 hom.)
• Consequence: RRP8 NM_015324.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.09
• Publications: 0 publications found

Genes affected

RRP8 (HGNC:29030): (ribosomal RNA processing 8) Enables methylated histone binding activity. Involved in several processes, including cellular response to glucose starvation; intrinsic apoptotic signaling pathway by p53 class mediator; and regulation of gene expression. Located in several cellular components, including cytosol; nuclear lumen; and rDNA heterochromatin. Part of chromatin silencing complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RRP8	NM_015324.4	c.979C>T	p.Arg327Trp	missense_variant	Exon 4 of 7	ENST00000254605.11	NP_056139.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RRP8	ENST00000254605.11	c.979C>T	p.Arg327Trp	missense_variant	Exon 4 of 7	1	NM_015324.4	ENSP00000254605.6

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152160 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000676 AC: 17 AN: 251408 AF XY: 0.000103

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.000231

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000636 AC: 93 AN: 1461882 Hom.: 0 Cov.: 32 AF XY: 0.0000743 AC XY: 54 AN XY: 727244

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.0000671 AC: 3 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000301 AC: 26 AN: 86252

European-Finnish (FIN) AF: 0.000150 AC: 8 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000477 AC: 53 AN: 1112008

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152160 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74320

African (AFR) AF: 0.0000241 AC: 1 AN: 41422

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5192

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4824

European-Finnish (FIN) AF: 0.0000942 AC: 1 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000370 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000412 AC: 5

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 03, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.979C>T (p.R327W) alteration is located in exon 4 (coding exon 4) of the RRP8 gene. This alteration results from a C to T substitution at nucleotide position 979, causing the arginine (R) at amino acid position 327 to be replaced by a tryptophan (W). 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	0.18
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.16
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.12	T
Eigen	Uncertain	0.66
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.027	D
MetaRNN	Uncertain	0.66	D
MetaSVM	Benign	-0.62	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		3.1
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-4.2	D
REVEL	Benign	0.23
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.010	D
Polyphen		1.0	D
Vest4		0.55
MutPred		0.51		Gain of sheet (P = 0.039);
MVP		0.78
MPC		0.14
ClinPred		0.81	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.84
gMVP		0.66
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: rs766876049; hg19: chr11-6622224;