12-28306770-A-G

Position:

• chr12-28306770-A-G

Variant summary

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

The NM_018318.5(CCDC91):​c.296A>G​(p.Asp99Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC91 NM_018318.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.88

Genes affected

CCDC91 (HGNC:24855): (coiled-coil domain containing 91) Predicted to enable identical protein binding activity. Involved in Golgi to lysosome transport. Located in nucleoplasm and trans-Golgi network. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCDC91	NM_018318.5	c.296A>G	p.Asp99Gly	missense_variant	5/13	ENST00000536442.6	NP_060788.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCDC91	ENST00000536442.6	c.296A>G	p.Asp99Gly	missense_variant	5/13	5	NM_018318.5	ENSP00000445660	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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 29, 2024

The c.296A>G (p.D99G) alteration is located in exon 4 (coding exon 4) of the CCDC91 gene. This alteration results from a A to G substitution at nucleotide position 296, causing the aspartic acid (D) at amino acid position 99 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	0.14
BayesDel_addAF	Uncertain	0.012	T
BayesDel_noAF	Benign	-0.22
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.068	.;T;T
Eigen	Benign	0.12
Eigen_PC	Uncertain	0.28
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.92	D;.;D
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.28	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.81	L;L;L
MutationTaster	Benign	0.94	N;N;N;N;N
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-1.4	N;N;N
REVEL	Benign	0.13
Sift	Uncertain	0.021	D;D;D
Sift4G	Benign	0.062	T;T;T
Polyphen		0.39	.;B;B
Vest4		0.57
MutPred		0.40		Gain of catalytic residue at L102 (P = 7e-04);Gain of catalytic residue at L102 (P = 7e-04);Gain of catalytic residue at L102 (P = 7e-04);
MVP		0.44
MPC		0.22
ClinPred		0.53	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.17
gMVP		0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.29		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.29		Position offset: 40

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: chr12-28459703;