rs797044885

Positions:

• chr1-244055156-A-C
• chr1-244055156-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PM5 PP2

The NM_205768.3(ZBTB18):​c.1382A>C​(p.Asn461Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. N461S) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ZBTB18 NM_205768.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.29

Genes affected

ZBTB18 (HGNC:13030): (zinc finger and BTB domain containing 18) This gene encodes a C2H2-type zinc finger protein which acts a transcriptional repressor of genes involved in neuronal development. The encoded protein recognizes a specific sequence motif and recruits components of chromatin to target genes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-244055156-A-G is described in Lovd as [Likely_pathogenic].
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ZBTB18. . Gene score misZ 3.4305 (greater than the threshold 3.09). Trascript score misZ 4.2468 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, autosomal dominant 22, complex neurodevelopmental disorder.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ZBTB18	NM_205768.3	c.1382A>C	p.Asn461Thr	missense_variant	2/2	ENST00000358704.4	NP_991331.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ZBTB18	ENST00000358704.4	c.1382A>C	p.Asn461Thr	missense_variant	2/2	1	NM_205768.3	ENSP00000351539	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.58	D;.
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.74	T;T
M_CAP	Benign	0.016	T
MetaRNN	Uncertain	0.45	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.49	N;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.84	D
PROVEAN	Uncertain	-3.5	.;D
REVEL	Uncertain	0.34
Sift	Uncertain	0.018	.;D
Sift4G	Benign	0.10	T;T
Polyphen		0.99	D;D
Vest4		0.38
MutPred		0.56		Gain of disorder (P = 0.1157);.;
MVP		0.19
MPC		1.9
ClinPred		0.94	D
GERP RS		5.8
Varity_R		0.49
gMVP		0.93

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

LitVar

Other links and lift over

dbSNP: rs797044885; hg19: chr1-244218458;