17-44903601-C-T

Variant names:

• chr17-44903601-C-T
• rs940631847
• NM_001258400.2:c.-229C>T

Variant summary

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

The NM_001258400.2(FAM187A):​c.-229C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000016 in 1,250,838 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: 32)
  • Exomes 𝑓: 0.0000016 (0 hom.)
• Consequence: FAM187A NM_001258400.2 5_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.302
• Publications: 0 publications found

Genes affected

FAM187A (HGNC:35153): (family with sequence similarity 187 member A) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

GFAP (HGNC:4235): (glial fibrillary acidic protein) This gene encodes one of the major intermediate filament proteins of mature astrocytes. It is used as a marker to distinguish astrocytes from other glial cells during development. Mutations in this gene cause Alexander disease, a rare disorder of astrocytes in the central nervous system. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Oct 2008]

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]

DNAAF19 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 17

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• primary ciliary dyskinesia

  Inheritance: AD 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=-0.83).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001258400.2. 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
	FAM187A	NM_001258400.2	MANE Select	c.-229C>T		5_prime_UTR	Exon 1 of 1	NP_001245329.1	A6NFU0
	GFAP	NM_002055.5	MANE Select	c.*3746G>A		3_prime_UTR	Exon 9 of 9	NP_002046.1	P14136-1
	DNAAF19	NM_213607.3	MANE Select	c.*784C>T		3_prime_UTR	Exon 4 of 4	NP_998772.1	Q8IW40-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM187A	ENST00000331733.5	TSL:1 MANE Select	c.-229C>T		5_prime_UTR	Exon 1 of 1	ENSP00000329499.4	A6NFU0
	GFAP	ENST00000588735.3	TSL:1 MANE Select	c.*3746G>A		3_prime_UTR	Exon 9 of 9	ENSP00000466598.2	P14136-1
	DNAAF19	ENST00000417826.3	TSL:1 MANE Select	c.*784C>T		3_prime_UTR	Exon 4 of 4	ENSP00000391692.2	Q8IW40-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000160 AC: 2 AN: 1250838 Hom.: 0 Cov.: 32 AF XY: 0.00000166 AC XY: 1 AN XY: 603626

African (AFR) AF: 0.00 AC: 0 AN: 27532

American (AMR) AF: 0.00 AC: 0 AN: 15414

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 18242

East Asian (EAS) AF: 0.0000303 AC: 1 AN: 33018

South Asian (SAS) AF: 0.00 AC: 0 AN: 54666

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 29124

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3488

European-Non Finnish (NFE) AF: 9.83e-7 AC: 1 AN: 1017474

Other (OTH) AF: 0.00 AC: 0 AN: 51880

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	4.4
DANN	Benign	0.40
PhyloP100		0.30

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: rs940631847; hg19: chr17-42980969;