14-34999687-T-C

Variant names:

• chr14-34999687-T-C
• rs12433712
• NM_003136.4:c.170+38T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_003136.4(SRP54):​c.170+38T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000077 in 1,298,372 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 7.7e-7 (0 hom.)
• Consequence: SRP54 NM_003136.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.486
• Publications: 9 publications found

Genes affected

SRP54 (HGNC:11301): (signal recognition particle 54) Enables several functions, including 7S RNA binding activity; endoplasmic reticulum signal peptide binding activity; and guanyl ribonucleotide binding activity. Contributes to GTPase activity. Involved in granulocyte differentiation and protein targeting to ER. Located in cytosol and nucleus. Part of signal recognition particle, endoplasmic reticulum targeting. Implicated in severe congenital neutropenia 8. [provided by Alliance of Genome Resources, Apr 2022]

SRP54 Gene-Disease associations (from GenCC):

• neutropenia, severe congenital, 8, autosomal dominant

  Inheritance: AD Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• autosomal dominant severe congenital neutropenia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Shwachman-Diamond syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRP54	NM_003136.4	c.170+38T>C		intron_variant	Intron 3 of 15	ENST00000216774.11	NP_003127.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SRP54	ENST00000216774.11	c.170+38T>C		intron_variant	Intron 3 of 15	1	NM_003136.4	ENSP00000216774.6

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 7.70e-7 AC: 1 AN: 1298372 Hom.: 0 Cov.: 17 AF XY: 0.00000153 AC XY: 1 AN XY: 654400

African (AFR) AF: 0.00 AC: 0 AN: 30172

American (AMR) AF: 0.00 AC: 0 AN: 43618

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24912

East Asian (EAS) AF: 0.00 AC: 0 AN: 38852

South Asian (SAS) AF: 0.00 AC: 0 AN: 82390

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52482

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5434

European-Non Finnish (NFE) AF: 0.00000104 AC: 1 AN: 965618

Other (OTH) AF: 0.00 AC: 0 AN: 54894

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 1225

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	4.0
DANN	Benign	0.75
PhyloP100		-0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs12433712; hg19: chr14-35468893;