Phenotypic Variability in Majeed Syndrome
Bibliographic record
Abstract
To the Editor: Majeed syndrome (OMIM #609628) is a syndromic form of chronic recurrent multifocal osteomyelitis (CRMO) that presents with early onset, severe CRMO, and a microcytic dyserythropoietic anemia of variable severity. Onset in all reported cases has been in the first 2 years of life1,2,3. A minority of patients develop a neutrophilic dermatosis. The disease is due to mutations in LPIN2 , which encodes LIPIN2, a phosphatidate phosphatase important in lipid metabolism2,3,4,5,6. Here we present the case histories of 2 male cousins of Indian heritage with Majeed syndrome. Both born to parents with consanguineous marriages, the proband presented with typical Majeed syndrome (onset of CRMO by 2 yrs of age, significant microcytic dyserythropoietic anemia, and failure to thrive), but the cousin had later onset, milder disease more reminiscent of nonsyndromic CRMO (onset at 8 yrs of age and minimal anemia). Both were found to be homozygous for the same novel LPIN2 mutation. Our report details the natural history of the disease in these 2 boys, expands the at-risk ethnic and racial group of Majeed syndrome, and demonstrates that the disease can present … Address correspondence to Dr. P.J. Ferguson, Department of Pediatrics, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, Iowa 52242, USA. E-mail: polly-ferguson{at}uiowa.edu
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".