chr16-28911171-C-G

Position:

• chr16-28911171-C-G

Variant summary

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

The NM_024816.3(RABEP2):​c.903G>C​(p.Gln301His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,456,712 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RABEP2 NM_024816.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.00

Genes affected

RABEP2 (HGNC:24817): (rabaptin, RAB GTPase binding effector protein 2) Predicted to enable GTPase activator activity and growth factor activity. Involved in regulation of cilium assembly. Located in cytosol; intracellular membrane-bounded organelle; and microtubule organizing center. [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	UniProt
RABEP2	NM_024816.3	c.903G>C	p.Gln301His	missense_variant	6/13	ENST00000358201.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RABEP2	ENST00000358201.9	c.903G>C	p.Gln301His	missense_variant	6/13	1	NM_024816.3	P1
RABEP2	ENST00000357573.10	c.895-185G>C		intron_variant		1
RABEP2	ENST00000562590.5	n.1424G>C		non_coding_transcript_exon_variant	6/7	1
RABEP2	ENST00000544477.5	c.690G>C	p.Gln230His	missense_variant	5/12	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1456712 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 724828

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Nov 09, 2023

The c.903G>C (p.Q301H) alteration is located in exon 6 (coding exon 6) of the RABEP2 gene. This alteration results from a G to C substitution at nucleotide position 903, causing the glutamine (Q) at amino acid position 301 to be replaced by a histidine (H). 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	0.20
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.30	T;.
Eigen	Uncertain	0.42
Eigen_PC	Uncertain	0.39
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.84	T;T
M_CAP	Benign	0.016	T
MetaRNN	Uncertain	0.51	D;D
MetaSVM	Benign	-0.89	T
MutationAssessor	Uncertain	2.1	M;.
MutationTaster	Benign	0.98	D;D;D
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-2.3	N;N
REVEL	Benign	0.078
Sift	Uncertain	0.0010	D;D
Sift4G	Benign	0.062	T;D
Polyphen		1.0	D;D
Vest4		0.53
MutPred		0.15		Loss of phosphorylation at T297 (P = 0.2012);.;
MVP		0.52
MPC		0.23
ClinPred		0.93	D
GERP RS		4.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.56
gMVP		0.37

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.22		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.22		Position offset: -7

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: chr16-28922492;