Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2
The NM_170662.5(CBLB):c.-14-1G>T variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,613,662 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as not provided (no stars).
CBLB (HGNC:1542): (Cbl proto-oncogene B) This gene encodes an E3 ubiquitin-protein ligase which promotes proteosome-mediated protein degradation by transferring ubiquitin from an E2 ubiquitin-conjugating enzyme to a substrate. The encoded protein is involved in the regulation of immune response by limiting T-cell receptor, B-cell receptor, and high affinity immunoglobulin epsilon receptor activation. Studies in mouse suggest that this gene is involved in antifungal host defense and that its inhibition leads to increased fungal killing. Manipulation of this gene may be beneficial in implementing immunotherapies for a variety of conditions, including cancer, autoimmune diseases, allergies, and infections. [provided by RefSeq, Sep 2017]
Verdict is Likely_benign. Variant got -3 ACMG points.
PP3
Multiple lines of computational evidence support a deleterious effect 5: Cadd, dbscSNV1_ADA, dbscSNV1_RF, max_spliceai, Eigen [when BayesDel_addAF, MutationTaster, phyloP100way_vertebrate was below the threshold]