NM_005108.4:c.851C>G

Variant names:

• chr3-38374465-C-G
• rs775962919
• NM_005108.4:c.851C>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_005108.4(XYLB):​c.851C>G​(p.Ser284Trp) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,822 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. S284L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: XYLB NM_005108.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.79
• Publications: 1 publications found

Genes affected

XYLB (HGNC:12839): (xylulokinase) The protein encoded by this gene shares 22% sequence identity with Hemophilus influenzae xylulokinase, and even higher identity to other gene products in C.elegans (45%) and yeast (31-35%), which are thought to belong to a family of enzymes that include fucokinase, gluconokinase, glycerokinase and xylulokinase. These proteins play important roles in energy metabolism. [provided by RefSeq, Aug 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.855

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005108.4. 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
	XYLB	NM_005108.4	MANE Select	c.851C>G	p.Ser284Trp	missense	Exon 11 of 19	NP_005099.2
	XYLB	NM_001349178.2		c.851C>G	p.Ser284Trp	missense	Exon 11 of 20	NP_001336107.1
	XYLB	NM_001349179.2		c.440C>G	p.Ser147Trp	missense	Exon 9 of 17	NP_001336108.1	O75191-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XYLB	ENST00000207870.8	TSL:1 MANE Select	c.851C>G	p.Ser284Trp	missense	Exon 11 of 19	ENSP00000207870.3	O75191-1
	XYLB	ENST00000854437.1		c.851C>G	p.Ser284Trp	missense	Exon 11 of 20	ENSP00000524496.1
	XYLB	ENST00000650590.1		c.770C>G	p.Ser257Trp	missense	Exon 10 of 18	ENSP00000496840.1	A0A3B3IRM4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461822 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727208

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

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

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111970

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Benign	0.19	T
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Uncertain	0.10	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Pathogenic	3.0	M
PhyloP100		6.8
PrimateAI	Uncertain	0.67	T
PROVEAN	Pathogenic	-6.6	D
REVEL	Uncertain	0.49
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.93
MutPred		0.66		Loss of disorder (P = 0.0085)
MVP		0.76
MPC		0.58
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.97
gMVP		0.93
Mutation Taster		=38/62	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.28		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.28		Position offset: -3

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs775962919; hg19: chr3-38415956;