19-49490523-G-T

Variant names:

• chr19-49490523-G-T
• rs764899789
• NM_012423.4:c.203G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_012423.4(RPL13A):​c.203G>T​(p.Arg68Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,820 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R68Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RPL13A NM_012423.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.31
• Publications: 1 publications found

Genes affected

RPL13A (HGNC:10304): (ribosomal protein L13a) Ribosomes, the organelles that catalyze protein synthesis, consist of a small 40S subunit and a large 60S subunit. Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins. This gene encodes a member of the L13P family of ribosomal proteins that is a component of the 60S subunit. The encoded protein also plays a role in the repression of inflammatory genes as a component of the IFN-gamma-activated inhibitor of translation (GAIT) complex. This gene is co-transcribed with the small nucleolar RNA genes U32, U33, U34, and U35, which are located in the second, fourth, fifth, and sixth introns, respectively. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed throughout the genome. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Jul 2012]

SNORD33 (HGNC:10160): (small nucleolar RNA, C/D box 33) Predicted to act upstream of or within glucose metabolic process; insulin secretion; and reactive oxygen species metabolic process. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012423.4. 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
	RPL13A	NM_012423.4	MANE Select	c.203G>T	p.Arg68Leu	missense	Exon 4 of 8	NP_036555.1	P40429
	RPL13A	NM_001270491.2		c.20G>T	p.Arg7Leu	missense	Exon 3 of 7	NP_001257420.1	Q8J015
	RPL13A	NR_073024.2		n.215G>T		non_coding_transcript_exon	Exon 4 of 8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPL13A	ENST00000391857.9	TSL:1 MANE Select	c.203G>T	p.Arg68Leu	missense	Exon 4 of 8	ENSP00000375730.4	P40429
	RPL13A	ENST00000624069.3	TSL:1	n.*46G>T		non_coding_transcript_exon	Exon 4 of 8	ENSP00000485546.1	A0A096LPE0
	RPL13A	ENST00000624069.3	TSL:1	n.*46G>T		3_prime_UTR	Exon 4 of 8	ENSP00000485546.1	A0A096LPE0

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000400 AC: 1 AN: 250228 AF XY: 0.00

Gnomad AFR exome AF: 0.0000638

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461820 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727208

African (AFR) AF: 0.0000299 AC: 1 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: 53346

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

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	0.24	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	34
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T
Eigen	Benign	0.021
Eigen_PC	Benign	0.19
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.015	T
MetaRNN	Uncertain	0.67	D
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	1.5	L
PhyloP100		9.3
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-5.9	D
REVEL	Uncertain	0.35
Sift	Benign	0.034	D
Sift4G	Benign	0.061	T
Polyphen		0.0020	B
Vest4		0.90
MutPred		0.64		Loss of MoRF binding (P = 0.0064)
MVP		0.81
MPC		0.59
ClinPred		0.95	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.52
gMVP		0.81
Mutation Taster		=19/81	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.25		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.25		Position offset: 3

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

Other links and lift over

dbSNP: rs764899789; hg19: chr19-49993780;