14-34996752-C-T

Variant names:

• chr14-34996752-C-T
• rs2044078669
• NM_003136.4:c.43C>T

Variant summary

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

The NM_001146282.2(SRP54):​c.-13C>T variant causes a 5 prime UTR premature start codon gain change. The variant allele was found at a frequency of 0.00000411 in 1,461,084 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: SRP54 NM_001146282.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.55
• Publications: 0 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: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P
• 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: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001146282.2. 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
	SRP54	NM_003136.4	MANE Select	c.43C>T	p.Arg15Cys	missense	Exon 2 of 16	NP_003127.1	P61011-1
	SRP54	NM_001146282.2		c.-13C>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 15	NP_001139754.1	P61011-2
	SRP54	NM_001440813.1		c.43C>T	p.Arg15Cys	missense	Exon 2 of 16	NP_001427742.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SRP54	ENST00000216774.11	TSL:1 MANE Select	c.43C>T	p.Arg15Cys	missense	Exon 2 of 16	ENSP00000216774.6	P61011-1
	SRP54	ENST00000555557.5	TSL:2	c.-58C>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 15	ENSP00000451775.1	G3V4F7
	SRP54	ENST00000859405.1		c.43C>T	p.Arg15Cys	missense	Exon 2 of 17	ENSP00000529464.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1461084 Hom.: 0 Cov.: 29 AF XY: 0.00000413 AC XY: 3 AN XY: 726892

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33454

American (AMR) AF: 0.0000447 AC: 2 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39602

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111414

Other (OTH) AF: 0.00 AC: 0 AN: 60360

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0000000000247105), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000189

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.60
BayesDel_addAF	Uncertain	0.093	D
BayesDel_noAF	Benign	-0.10
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	D
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Benign	0.019	T
MetaRNN	Uncertain	0.72	D
MetaSVM	Uncertain	0.25	D
MutationAssessor	Pathogenic	3.5	M
PhyloP100		4.6
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-3.9	D
REVEL	Uncertain	0.47
Sift	Uncertain	0.023	D
Sift4G	Uncertain	0.027	D
Polyphen		1.0	D
Vest4		0.76
MutPred		0.53		Loss of MoRF binding (P = 6e-04)
MVP		0.42
MPC		2.4
ClinPred		1.0	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.33
gMVP		0.71
Mutation Taster		=46/54	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs2044078669; hg19: chr14-35465958; COSMIC: COSV53740061;