chr11-77243815-C-A

Variant names:

• chr11-77243815-C-A
• rs779270640
• NM_182833.3:c.1120G>T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_182833.3(GDPD4):​c.1120G>T​(p.Val374Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,458 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. V374I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: GDPD4 NM_182833.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.82
• Publications: 0 publications found

Genes affected

GDPD4 (HGNC:24849): (glycerophosphodiester phosphodiesterase domain containing 4) Predicted to enable metal ion binding activity and phosphoric diester hydrolase activity. Predicted to be involved in lipid metabolic process. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.81

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_182833.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GDPD4	NM_182833.3	MANE Select	c.1120G>T	p.Val374Phe	missense	Exon 13 of 17	NP_878253.1	Q6W3E5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GDPD4	ENST00000315938.5	TSL:1 MANE Select	c.1120G>T	p.Val374Phe	missense	Exon 13 of 17	ENSP00000320815.4	Q6W3E5-2
	GDPD4	ENST00000376217.6	TSL:1	c.1120G>T	p.Val374Phe	missense	Exon 12 of 17	ENSP00000365390.2	Q6W3E5-1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461458 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727048

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44686

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0000756 AC: 3 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86206

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111742

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.71
BayesDel_addAF	Uncertain	0.021	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
Eigen	Uncertain	0.21
Eigen_PC	Benign	0.040
FATHMM_MKL	Benign	0.43	N
LIST_S2	Benign	0.78	T
M_CAP	Benign	0.013	T
MetaRNN	Pathogenic	0.81	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		2.8
PrimateAI	Uncertain	0.51	T
PROVEAN	Pathogenic	-4.8	D
REVEL	Benign	0.23
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.81
MutPred		0.62		Gain of helix (P = 0.132)
MVP		0.35
MPC		0.37
ClinPred		1.0	D
GERP RS		3.4
Varity_R		0.72
gMVP		0.91
Mutation Taster		=72/28	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: rs779270640; hg19: chr11-76954860;