1-15495452-T-C

Variant summary

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

The NM_001229.5(CASP9):c.869A>G(p.Glu290Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000281 in 1,424,726 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: CASP9 NM_001229.5 missense, splice_region
• Scores: Splicing: ADA: 0.000003904
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.37

Genes affected

CASP9 (HGNC:1511): (caspase 9) This gene encodes a member of the cysteine-aspartic acid protease (caspase) family. Sequential activation of caspases plays a central role in the execution-phase of cell apoptosis. Caspases exist as inactive proenzymes which undergo proteolytic processing at conserved aspartic residues to produce two subunits, large and small, that dimerize to form the active enzyme. This protein can undergo autoproteolytic processing and activation by the apoptosome, a protein complex of cytochrome c and the apoptotic peptidase activating factor 1; this step is thought to be one of the earliest in the caspase activation cascade. This protein is thought to play a central role in apoptosis and to be a tumor suppressor. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]

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=0.16454402).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CASP9	NM_001229.5	c.869A>G	p.Glu290Gly	missense_variant, splice_region_variant	7/9	ENST00000333868.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CASP9	ENST00000333868.10	c.869A>G	p.Glu290Gly	missense_variant, splice_region_variant	7/9	1	NM_001229.5	P1

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome AF: 0.00000281 AC: 4 AN: 1424726 Hom.: 0 Cov.: 31 AF XY: 0.00000283 AC XY: 2 AN XY: 706378

Gnomad4 AFR exome AF: 0.0000939

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: 0.00

Gnomad4 OTH exome AF: 0.0000170

GnomAD4 genome Cov.: 29

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 16, 2024

The c.869A>G (p.E290G) alteration is located in exon 7 (coding exon 7) of the CASP9 gene. This alteration results from a A to G substitution at nucleotide position 869, causing the glutamic acid (E) at amino acid position 290 to be replaced by a glycine (G). 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	0.11
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
Cadd	Benign	17
Dann	Uncertain	1.0
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.41
FATHMM_MKL	Benign	0.74	D
LIST_S2	Benign	0.69	T;T;T;T;T
M_CAP	Benign	0.0087	T
MetaRNN	Benign	0.16	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	0.99	D;D;D;D
PrimateAI	Benign	0.35	T
PROVEAN	Uncertain	-3.5	D;D;N;D;D
REVEL	Benign	0.11
Sift	Benign	0.28	T;T;D;T;T
Sift4G	Benign	0.24	T;T;D;T;.
Polyphen		0.0090	B;B;P;.;.
Vest4		0.21
MVP		0.41
MPC		0.15
ClinPred		0.69	D
GERP RS		2.5
Varity_R		0.37
gMVP		0.39

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0000039
dbscSNV1_RF	Benign	0.016
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

Other links and lift over

dbSNP: rs1286838324; hg19: chr1-15821947;