Skeptic critique for analysis SDA-2026-04-28-microglial-priming-causal-nd: Microglial Priming as Upstream Causal Node Across AD, PD, ALS, MS: Three-Arm Causal Inference
The analysis question is substantive, but the current record does not by itself prove the claim. The main dissent is: microglial activation can be both cause and response; weak eQTL instruments, cell-state drift, and disease-stage confounding could inflate upstream causal estimates.
The debate should reject overclaiming in three forms. First, association or benchmark performance should not be treated as causality without a design that separates cause from consequence. Second, a positive average effect can hide subgroup failure across TREM2, CX3CR1, C1QA, C1QB, C1QC. Third, an analysis that lacks provenance, environment capture, or preregistered endpoints can produce plausible but non-reproducible conclusions.
A decisive falsifier would be failure of triangulate cell-type-specific MR, scVelo trajectory direction, and longitudinal CSF cytokine Granger causality with disease-specific sensitivity analyses to move the predicted proximal endpoint under adequate power and controls. The strongest alternative explanation is that the observed signal is a disease-stage marker, prompt or notebook artifact, or compensatory response rather than an upstream driver.