chr17-44899795-G-C

Variant names:

• chr17-44899795-G-C
• rs886053012
• NM_213607.3:c.-74G>C

Variant summary

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

The NM_213607.3(DNAAF19):​c.-74G>C variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNAAF19 NM_213607.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.160
• Publications: 0 publications found

Genes affected

DNAAF19 (HGNC:32700): (coiled-coil domain containing 103) Enables protein homodimerization activity. Involved in axonemal dynein complex assembly; cilium movement; and determination of left/right symmetry. Predicted to be located in axoneme. Predicted to be part of outer dynein arm. Implicated in primary ciliary dyskinesia 17. [provided by Alliance of Genome Resources, Apr 2022]

EFTUD2 (HGNC:30858): (elongation factor Tu GTP binding domain containing 2) This gene encodes a GTPase which is a component of the spliceosome complex which processes precursor mRNAs to produce mature mRNAs. Mutations in this gene are associated with mandibulofacial dysostosis with microcephaly. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

EFTUD2 Gene-Disease associations (from GenCC):

• mandibulofacial dysostosis-microcephaly syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, ClinGen

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=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_213607.3. 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
	DNAAF19	NM_213607.3	MANE Select	c.-74G>C		5_prime_UTR	Exon 1 of 4	NP_998772.1	Q8IW40-1
	DNAAF19	NM_001258395.2		c.-44G>C		5_prime_UTR	Exon 1 of 4	NP_001245324.1	Q8IW40-1
	DNAAF19	NM_001258396.2		c.-58G>C		5_prime_UTR	Exon 1 of 4	NP_001245325.1	Q8IW40-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAAF19	ENST00000417826.3	TSL:1 MANE Select	c.-74G>C		5_prime_UTR	Exon 1 of 4	ENSP00000391692.2	Q8IW40-1
	DNAAF19	ENST00000410006.6	TSL:2	c.-44G>C		5_prime_UTR	Exon 1 of 4	ENSP00000387252.1	Q8IW40-1
	DNAAF19	ENST00000357776.6	TSL:2	c.-58G>C		5_prime_UTR	Exon 1 of 4	ENSP00000350420.2	F8W6J8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Primary ciliary dyskinesia 17 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	5.3
DANN	Benign	0.63
PhyloP100		-0.16
PromoterAI		-0.0079	Neutral

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: rs886053012; hg19: chr17-42977163;