<i>IL2RG</i>: A series of three novel mutations with clinical manifestations
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Bibliographic record
Abstract
Background: X-linked severe combined immunodeficiency (SCID) is caused by mutations in the IL2RG gene and classically presents with absent T cells and natural killer (NK) cells. Mutational analysis has contributed to the understanding of this gene. Methods: The primary immunodeficiency (PID) registry was reviewed for patients with SCID with novel IL2RG mutations. The clinical phenotype was assessed using a retrospective chart review. Results: We describe 3 novel mutations in the IL2RG. The first was a guanine to adenine substitution at position 215 (c.215 G > A) in exon 2 leading to a cysteine to tyrosine substitution at position 72 (p.Cys72Tyr), with a typical T − B + NK − phenotype. The second was a deletion of thymine at position 618 and adenine at position 619 (c.618_619TA) in exon 5, leading to a frameshift at the 206 amino acid (p.His206fs). The phenotype was characterized by a classic SCID presentation and immunophenotyping revealed a low number of absolute lymphocytes with mostly B cells, low levels of immunoglobulins, as well as very low NK cells. Finally, the third mutation was a guanine to cytosine substitution at position 341 (c.341 G > C) in exon 3 leading to a glycine to alanine substitution at position 114 (p.Gly114Ala), presenting with a T + B + NK + phenotype. The presence of T and NK cells in IL2RG are discussed in the context of other mutations allowing for T and NK cells in IL2RG mutations, as well as in the setting of maternal engraftment. Conclusion: To the best of our knowledge we describe 3 novel mutations in the IL2RG gene and the associated phenotypes. These mutations illustrate that these patients can have atypical immunological evaluations. Statement of novelty: To the best of our knowledge, this paper describes 3 novel mutations in the IL2RG gene.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it