rs1597675890

Variant names:

• chr16-89562393-T-C
• rs1597675890
• NM_000977.4:c.477+2T>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP5

The NM_000977.4(RPL13):​c.477+2T>C variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: RPL13 NM_000977.4 splice_donor, intron
• Scores: Splicing: ADA: 0.9328
• Clinical Significance: Pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 7.68
• Publications: 1 publications found

Genes affected

RPL13 (HGNC:10303): (ribosomal protein L13) 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 ribosomal protein that is a component of the 60S subunit. The protein belongs to the L13E family of ribosomal proteins. It is located in the cytoplasm. This gene is expressed at significantly higher levels in benign breast lesions than in breast carcinomas. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed through the genome. [provided by RefSeq, Jul 2011]

RPL13 Gene-Disease associations (from GenCC):

• spondyloepimetaphyseal dysplasia, Isidor-Toutain type

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae)
• spondyloepiphyseal dysplasia

  Inheritance: AD Classification: MODERATE Submitted by: Franklin by Genoox

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.08962264 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 16-89562393-T-C is Pathogenic according to our data. Variant chr16-89562393-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 689801.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000977.4. 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
	RPL13	NM_000977.4	MANE Select	c.477+2T>C		splice_donor intron	N/A	NP_000968.2
	RPL13	NM_033251.2		c.477+2T>C		splice_donor intron	N/A	NP_150254.1	P26373-1
	RPL13	NM_001243131.1		c.336+2T>C		splice_donor intron	N/A	NP_001230060.1	P26373-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPL13	ENST00000311528.10	TSL:1 MANE Select	c.477+2T>C		splice_donor intron	N/A	ENSP00000307889.5	P26373-1
	RPL13	ENST00000393099.4	TSL:1	c.477+2T>C		splice_donor intron	N/A	ENSP00000376811.3	P26373-1
	RPL13	ENST00000562879.5	TSL:1	n.*125+2T>C		splice_donor intron	N/A	ENSP00000457174.1	H3BTH3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Spondyloepimetaphyseal dysplasia (1)
1	-	-	Spondyloepimetaphyseal dysplasia, Isidor-Toutain type (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.012	T
BayesDel_noAF	Benign	-0.22
CADD	Pathogenic	28
DANN	Benign	0.91
Eigen	Pathogenic	0.78
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		7.7
GERP RS		3.3
PromoterAI		-0.18	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.93
dbscSNV1_RF	Benign	0.59
SpliceAI score (max)		0.99		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.33		Position offset: 40
DS_DL_spliceai		0.99		Position offset: -2

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

Other links and lift over

dbSNP: rs1597675890; hg19: chr16-89628801;