Genetic Variant RFC5:p.Phe227Leu (chr12-118026904-T-C) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_007370.7(RFC5):c.679T>C(p.Phe227Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,613,896 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 (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

RFC5
NM_007370.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.98

Variant links:

Genes affected

RFC5 (HGNC:9973): (replication factor C subunit 5) This gene encodes the smallest subunit of the replication factor C complex, which consists of five distinct subunits (140, 40, 38, 37, and 36 kDa) and is required for DNA replication. This subunit interacts with the C-terminal region of proliferating cell nuclear antigen and is required to open and load proliferating cell nuclear antigen onto DNA during S phase. It is a member of the AAA+ (ATPases associated with various cellular activities) ATPase family and forms a core complex with the 38 and 40 kDa subunits that possesses DNA-dependent ATPase activity. A related pseudogene has been identified on chromosome 9. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

RFC5 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28332877).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RFC5	NM_007370.7 link	c.679T>C	p.Phe227Leu	missense_variant	Exon 8 of 11	ENST00000454402.7	NP_031396.1	P40937-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RFC5	ENST00000454402.7 link	c.679T>C	p.Phe227Leu	missense_variant	Exon 8 of 11	1	NM_007370.7	ENSP00000408295.2	P40937-1
RFC5	ENST00000392542.6 link	c.616T>C	p.Phe206Leu	missense_variant	Exon 9 of 12	2		ENSP00000376325.2	P40937-2
RFC5	ENST00000472603.1 link	n.193T>C		non_coding_transcript_exon_variant	Exon 3 of 3	2
RFC5	ENST00000543153.1 link	n.15T>C		non_coding_transcript_exon_variant	Exon 1 of 6	5

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

251092

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135686

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000465

AC:

AN:

1461750

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727172

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000612

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 05, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.679T>C (p.F227L) alteration is located in exon 8 (coding exon 8) of the RFC5 gene. This alteration results from a T to C substitution at nucleotide position 679, causing the phenylalanine (F) at amino acid position 227 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

Pathogenic

0.99

BayesDel_addAF

Benign

-0.050

BayesDel_noAF

Benign

-0.31

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.39

T;.

Eigen

Benign

0.15

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.92

D;D

M_CAP

Benign

0.0062

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;.

PrimateAI

Pathogenic

0.81

PROVEAN

Uncertain

-4.2

D;D

REVEL

Benign

0.17

Sift

Benign

0.28

T;T

Sift4G

Benign

0.52

T;.

Polyphen

0.0060

B;.

Vest4

0.47

MutPred

0.29

Gain of catalytic residue at T223 (P = 0.0169);.;

MVP

0.44

MPC

0.46

ClinPred

0.78

GERP RS

5.8

Varity_R

0.54

gMVP

0.72

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

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