Bibliographic record
Abstract
I have read with interest the recent report on the putative impact of chemokine polymorphisms in Parkinson's Disease 1 .Based on a meta-analysis of case-control investigations for IL-6 and several other candidate genes, the authors concluded protective effects of an IL-6 promoter variant, rs1800795 or IL-6 G[-174]C.However, key issues appear to have been overlooked.Firstly, the study by Infante et al 2 used a TaqMan genotyping procedure with unknown primers.It is therefore impossible to tell in retrospect whether the transcribed or the antiparallel DNA strand served for allele calling and whether the risk allele was "G", or "C".As rs1800795 stands for a canonical substitution that can be read as "G" or as "C" depending on the template, strand information is essential to define genetic exposure.A second study 3 used sequence-specific oligo probes that do not differentiate between "G" and "C" but rather call only the "C" allele on the transcribed strand.A third study 4 genotyped the non-transcribed strand as can be verified by consulting the original pyrosequencing protocol.Chu et al failed to correct for the alternate strand and have mistaken "G" for "C".In other words, two of the three studies in question are non-informative and the third gives results that were misinterpreted.Finally, the authors have muddled IL-6 studies in Table 2 and have omitted additional studies 5 .The confusion of risk and protective alleles emphasizes further the need for strand-sensitive meta-analyses of G:C and A:T transversions.It is unfortunate that this procedure is not routinely implemented in PDGene (URL: http://www.pdgene.org), a database that was consulted by the authors and that also offers meta-analyses of case-control investigations.Having reviewed all PDGene entries for rs1800795, I note that as of September 2012, data from multiple studies 2-4 have been misassigned to rs13447446, a G:T substitution 63bp downstream from rs1800795.Other studies that did not investigate rs1800795 are included in PDGene's meta-analysis of this variant.While Chu et al must be given credit for identifying these errors, the information available is insufficient to support a protective role of rs1800795 in Parkinson's disease.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.003 | 0.013 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.004 |
| Insufficient payload (model declined to judge) | 0.004 | 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".