rs797045318

Variant names:

• chr18-33746160-C-A
• rs797045318
• NM_030632.3:c.6312C>A

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_030632.3(ASXL3):​c.6312C>A​(p.Asp2104Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000178 in 1,461,668 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000018 (0 hom.)
• Consequence: ASXL3 NM_030632.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.964
• Publications: 0 publications found

Genes affected

ASXL3 (HGNC:29357): (ASXL transcriptional regulator 3) This gene encodes a protein containing a plant homeodomain (PHD) zinc finger domain that plays a role in the regulation of gene transcription. The encoded protein has been shown to negatively regulate lipogenesis by binding to and inhibiting the transcriptional activity of two nuclear hormone receptors, oxysterols receptor LXR-alpha (LXRalpha) and thyroid hormone receptor beta (TRbeta). The encoded protein may also inhibit histone deubiquitination. Mutations in this gene have been identified in human patients with Bainbridge-Ropers syndrome, which is characterized by feeding difficulties, developmental delay and other features. [provided by RefSeq, May 2017]

ASXL3 Gene-Disease associations (from GenCC):

• severe feeding difficulties-failure to thrive-microcephaly due to ASXL3 deficiency syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae), Illumina
• syndromic intellectual disability

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.06253022).
• BS2: High AC in GnomAdExome4 at 26 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030632.3. 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
	ASXL3	NM_030632.3	MANE Select	c.6312C>A	p.Asp2104Glu	missense	Exon 12 of 12	NP_085135.1	Q9C0F0-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ASXL3	ENST00000269197.12	TSL:5 MANE Select	c.6312C>A	p.Asp2104Glu	missense	Exon 12 of 12	ENSP00000269197.4	Q9C0F0-1
	ASXL3	ENST00000696964.1		c.6315C>A	p.Asp2105Glu	missense	Exon 13 of 13	ENSP00000513003.1	A0A8V8TKV8
	ASXL3	ENST00000681521.1		c.6192C>A	p.Asp2064Glu	missense	Exon 11 of 11	ENSP00000506037.1	A0A7P0TAE5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.00000401 AC: 1 AN: 249222 AF XY: 0.00000740

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000178 AC: 26 AN: 1461668 Hom.: 0 Cov.: 34 AF XY: 0.0000165 AC XY: 12 AN XY: 727114

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53366

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000234 AC: 26 AN: 1111866

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome Cov.: 31

Alfa AF: 0.0000312 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	16
DANN	Benign	0.97
DEOGEN2	Benign	0.014	T
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.055
FATHMM_MKL	Uncertain	0.79	D
LIST_S2	Benign	0.55	T
M_CAP	Benign	0.0018	T
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.63	N
PhyloP100		0.96
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-0.49	N
REVEL	Benign	0.081
Sift	Benign	0.29	T
Sift4G	Benign	0.83	T
Polyphen		0.022	B
Vest4		0.27
MutPred		0.074		Gain of phosphorylation at S2102 (P = 0.1598)
MVP		0.068
MPC		0.15
ClinPred		0.26	T
GERP RS		5.2
Varity_R		0.066
gMVP		0.16
Mutation Taster		=89/11	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: rs797045318; hg19: chr18-31326124;