19-13962709-G-C

Variant names:

• chr19-13962709-G-C
• rs1229686716
• NM_002918.5:c.2926C>G

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_002918.5(RFX1):​c.2926C>G​(p.Leu976Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000164 in 1,527,822 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. 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. L976M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: RFX1 NM_002918.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.971
• Publications: 0 publications found

Genes affected

RFX1 (HGNC:9982): (regulatory factor X1) This gene encodes a member of the regulatory factor X (RFX) family of transcription factors, which are characterized by a winged-helix DNA-binding domain. The encoded transcription factor contains an N-terminal activation domain and a C-terminal repression domain, and may activate or repress target gene expression depending on cellular context. This transcription factor has been shown to regulate a wide variety of genes involved in immunity and cancer, including the MHC class II genes and genes that may be involved in cancer progression. This gene exhibits altered expression in glioblastoma and the autoimmune disease systemic lupus erythematosis (SLE). [provided by RefSeq, Jul 2016]

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.20604694).
• BS2: High AC in GnomAdExome4 at 23 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RFX1	NM_002918.5	c.2926C>G	p.Leu976Val	missense_variant	Exon 21 of 21	ENST00000254325.9	NP_002909.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RFX1	ENST00000254325.9	c.2926C>G	p.Leu976Val	missense_variant	Exon 21 of 21	1	NM_002918.5	ENSP00000254325.3

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152084 Hom.: 0 Cov.: 33

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000804 AC: 1 AN: 124330 AF XY: 0.0000147

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: 0.00

Gnomad NFE exome AF: 0.0000219

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000167 AC: 23 AN: 1375738 Hom.: 0 Cov.: 35 AF XY: 0.0000177 AC XY: 12 AN XY: 678510

African (AFR) AF: 0.00 AC: 0 AN: 31080

American (AMR) AF: 0.00 AC: 0 AN: 35250

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24828

East Asian (EAS) AF: 0.00 AC: 0 AN: 35408

South Asian (SAS) AF: 0.00 AC: 0 AN: 78580

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4252

European-Non Finnish (NFE) AF: 0.0000186 AC: 20 AN: 1075552

Other (OTH) AF: 0.0000523 AC: 3 AN: 57380

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152084 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74288

African (AFR) AF: 0.0000241 AC: 1 AN: 41424

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10632

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 312

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67960

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jun 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2926C>G (p.L976V) alteration is located in exon 21 (coding exon 20) of the RFX1 gene. This alteration results from a C to G substitution at nucleotide position 2926, causing the leucine (L) at amino acid position 976 to be replaced by a valine (V). 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	0.088
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.078	T
Eigen	Benign	0.071
Eigen_PC	Benign	0.12
FATHMM_MKL	Benign	0.74	D
LIST_S2	Benign	0.77	T
M_CAP	Pathogenic	0.86	D
MetaRNN	Benign	0.21	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.69	N
PhyloP100		0.97
PrimateAI	Pathogenic	0.86	D
PROVEAN	Benign	-0.10	N
REVEL	Benign	0.10
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.13	T
Polyphen		0.90	P
Vest4		0.13
MutPred		0.17		Gain of sheet (P = 0.0101);
MVP		0.21
MPC		1.4
ClinPred		0.28	T
GERP RS		3.3
Varity_R		0.30
gMVP		0.24
Mutation Taster		=95/5	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: rs1229686716; hg19: chr19-14073521;