NM_004401.3:c.845C>G

Variant names:

• chr1-10461641-G-C
• NM_004401.3:c.845C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004401.3(DFFA):​c.845C>G​(p.Thr282Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T282M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DFFA NM_004401.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.45

Genes affected

DFFA (HGNC:2772): (DNA fragmentation factor subunit alpha) Apoptosis is a cell death process that removes toxic and/or useless cells during mammalian development. The apoptotic process is accompanied by shrinkage and fragmentation of the cells and nuclei and degradation of the chromosomal DNA into nucleosomal units. DNA fragmentation factor (DFF) is a heterodimeric protein of 40-kD (DFFB) and 45-kD (DFFA) subunits. DFFA is the substrate for caspase-3 and triggers DNA fragmentation during apoptosis. DFF becomes activated when DFFA is cleaved by caspase-3. The cleaved fragments of DFFA dissociate from DFFB, the active component of DFF. DFFB has been found to trigger both DNA fragmentation and chromatin condensation during apoptosis. Two alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18763056).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DFFA	NM_004401.3	c.845C>G	p.Thr282Arg	missense_variant	Exon 6 of 6	ENST00000377038.8	NP_004392.1
DFFA	NM_213566.2	c.*1393C>G		3_prime_UTR_variant	Exon 5 of 5		NP_998731.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DFFA	ENST00000377038.8	c.845C>G	p.Thr282Arg	missense_variant	Exon 6 of 6	1	NM_004401.3	ENSP00000366237.3
DFFA	ENST00000476658.5	n.*245C>G		downstream_gene_variant		3		ENSP00000468395.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461888 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727244

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.54
BayesDel_addAF	Benign	-0.069	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T
Eigen	Benign	0.019
Eigen_PC	Benign	-0.044
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-0.77	T
MutationAssessor	Benign	1.8	L
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.14
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.019	D
Polyphen		0.95	P
Vest4		0.37
MutPred		0.18		Gain of methylation at K281 (P = 0.0433);
MVP		0.36
MPC		0.83
ClinPred		0.72	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.12
gMVP		0.47

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-10521698;