6-116877418-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2BP4_StrongBP6_ModerateBS1

The NM_173560.4(RFX6):c.143C>T(p.Ala48Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000512 in 1,600,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A48G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

RFX6
NM_173560.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.57

Variant links:

Genes affected

RFX6 (HGNC:21478): (regulatory factor X6) The nuclear protein encoded by this gene is a member of the regulatory factor X (RFX) family of transcription factors. Studies in mice suggest that this gene is specifically required for the differentiation of islet cells for the production of insulin, but not for the differentiation of pancreatic polypeptide-producing cells. It regulates the transcription factors involved in beta-cell maturation and function, thus, restricting the expression of the beta-cell differentiation and specification genes. Mutations in this gene are associated with Mitchell-Riley syndrome, which is characterized by neonatal diabetes with pancreatic hypoplasia, duodenal and jejunal atresia, and gall bladder agenesis.[provided by RefSeq, Sep 2010]

RFX6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0061531067).

BP6

Variant 6-116877418-C-T is Benign according to our data. Variant chr6-116877418-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 917471.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000309 (47/152272) while in subpopulation AFR AF= 0.00113 (47/41562). AF 95% confidence interval is 0.000873. There are 0 homozygotes in gnomad4. There are 25 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RFX6	NM_173560.4 linkuse as main transcript	c.143C>T	p.Ala48Val	missense_variant	1/19	ENST00000332958.3
RFX6	XM_011535589.2 linkuse as main transcript	c.143C>T	p.Ala48Val	missense_variant	1/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RFX6	ENST00000332958.3 linkuse as main transcript	c.143C>T	p.Ala48Val	missense_variant	1/19	1	NM_173560.4	P1
RFX6	ENST00000487683.5 linkuse as main transcript	n.207C>T		non_coding_transcript_exon_variant	1/14	5

Frequencies

GnomAD3 genomes

AF:

0.000309

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00113

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000122

AC:

AN:

221722

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

120194

show subpopulations

Gnomad AFR exome

AF:

0.00178

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000601

Gnomad SAS exome

AF:

0.0000361

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000102

Gnomad OTH exome

AF:

0.000179

GnomAD4 exome

AF:

0.0000242

AC:

AN:

1448552

Hom.:

Cov.:

AF XY:

0.0000236

AC XY:

AN XY:

719152

show subpopulations

Gnomad4 AFR exome

AF:

0.000934

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.04e-7

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.000309

AC:

AN:

152272

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.00113

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000403

Hom.:

Bravo

AF:

0.000325

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000116

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Monogenic diabetes

Benign:1

Likely benign, criteria provided, single submitter

research

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Nov 21, 2018

ACMG criteria: BP4 (REVEL 0.056 + 10 predictors), BP1 (heterozygous LOF variants in RFX6 associated with reduced penetrance MODY: PMID: 29026101, majority of variants causing M-R syndrome are also LOF)= likely benign -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.70

Cadd

Benign

2.9

Dann

Benign

0.83

DEOGEN2

Benign

0.11

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.021

LIST_S2

Benign

0.45

M_CAP

Benign

0.015

MetaRNN

Benign

0.0062

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

MutationTaster

Benign

1.0

PrimateAI

Benign

0.40

PROVEAN

Benign

0.0

REVEL

Benign

0.056

Sift

Benign

0.35

Sift4G

Benign

0.80

Polyphen

0.0020

Vest4

0.17

MVP

0.040

MPC

0.49

ClinPred

0.0070

GERP RS

-3.6

Varity_R

0.027

gMVP

0.29

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