Genetic Variant RFFL:p.Glu300Lys (chr17-35014752-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001017368.2(RFFL):c.898G>A(p.Glu300Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,580 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000034 ( 1 hom. )

Consequence

RFFL
NM_001017368.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.38

Variant links:

Genes affected

RFFL (HGNC:24821): (ring finger and FYVE like domain containing E3 ubiquitin protein ligase) Enables enzyme binding activity; p53 binding activity; and ubiquitin protein ligase activity. Involved in cellular protein metabolic process; negative regulation of cysteine-type endopeptidase activity involved in execution phase of apoptosis; and negative regulation of signal transduction. Located in endosome membrane and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

RFFL links:

ENSG00000267618 (HGNC:):

ENSG00000267618 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein
RFFL	NM_001017368.2 link	c.898G>A	p.Glu300Lys	missense_variant	Exon 6 of 7	ENST00000394597.7	NP_001017368.1
RFFL	NR_037713.2 link	n.1028G>A		non_coding_transcript_exon_variant	Exon 6 of 7
RAD51L3-RFFL	NR_037714.1 link	n.866+1618G>A		intron_variant	Intron 6 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RFFL	ENST00000394597.7 link	c.898G>A	p.Glu300Lys	missense_variant	Exon 6 of 7	1	NM_001017368.2	ENSP00000378096.3		Q8WZ73-1
ENSG00000267618	ENST00000593039.5 link	c.637+1618G>A		intron_variant	Intron 6 of 6	2		ENSP00000466834.1		K7EN88

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461424

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727054

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.898G>A (p.E300K) alteration is located in exon 6 (coding exon 5) of the RFFL gene. This alteration results from a G to A substitution at nucleotide position 898, causing the glutamic acid (E) at amino acid position 300 to be replaced by a lysine (K). 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

0.086

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.17

T;T;T;T

Eigen

Benign

-0.091

Eigen_PC

Benign

0.096

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.86

.;.;.;D

M_CAP

Benign

0.0051

MetaRNN

Benign

0.19

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L;L;L

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.83

N;N;.;.

REVEL

Benign

0.047

Sift

Benign

0.19

T;T;.;.

Sift4G

Benign

0.86

T;T;T;T

Polyphen

0.16

B;B;B;B

Vest4

0.37

MutPred

0.40

Gain of ubiquitination at E300 (P = 0.0045);Gain of ubiquitination at E300 (P = 0.0045);Gain of ubiquitination at E300 (P = 0.0045);Gain of ubiquitination at E300 (P = 0.0045);

MVP

0.43

MPC

0.35

ClinPred

0.39

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.12

gMVP

0.40

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.22

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.22

Position offset: 11

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over