5-112867428-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_003135.3(SRP19):c.326C>T(p.Ala109Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,460 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SRP19 NM_003135.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.15

Genes affected

SRP19 (HGNC:11300): (signal recognition particle 19) Enables 7S RNA binding activity. Contributes to ribosome binding activity. Predicted to be involved in SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition. Located in nucleolus. Part of signal recognition particle, endoplasmic reticulum targeting. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.909

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SRP19	NM_003135.3	c.326C>T	p.Ala109Val	missense_variant	5/5	ENST00000505459.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRP19	ENST00000505459.6	c.326C>T	p.Ala109Val	missense_variant	5/5	1	NM_003135.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461460 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727060

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 06, 2024

The c.326C>T (p.A109V) alteration is located in exon 5 (coding exon 5) of the SRP19 gene. This alteration results from a C to T substitution at nucleotide position 326, causing the alanine (A) at amino acid position 109 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.22
Cadd	Pathogenic	26
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.50	T;T
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.85
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Benign	0.048	D
MetaRNN	Pathogenic	0.91	D;D
MetaSVM	Uncertain	0.18	D
MutationAssessor	Pathogenic	3.4	M;.
MutationTaster	Benign	1.0	D;D;D
PROVEAN	Uncertain	-3.0	D;.
REVEL	Uncertain	0.53
Sift	Benign	0.034	D;.
Sift4G	Uncertain	0.0060	D;D
Polyphen		1.0	D;.
Vest4		0.90
MutPred		0.79		Gain of MoRF binding (P = 0.1157);.;
MVP		0.85
MPC		0.67
ClinPred		0.98	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.86
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.22		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.22		Position offset: -24

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-112203125;