Findings from Widespread white matter microstructural abnormalities in bipolar disorder: evidence from mega‐ and meta‐analyses across 3,033 individuals (Favre et al., 2019). Mega‐analysis fractional anisotropy (FA) differences between BD and HC across 43 white matter (WM) tracts and the whole‐brain skeleton with R squared effect sizes and confidence intervals ranked by increasing order of magnitude for the regions showing significant group differences. R, right; .L, left; CC, corpus callosum; BCC, body of the corpus callosum; GCC, genu of the corpus callosum; CGC, cingulum; SCC, splenium of corpus callosum; FX, fornix; PTR, posterior thalamic radiation; EC, external capsule; ACR, anterior corona radiata; SLF, superior longitudinal fasciculus; UNC, uncinate fasciculus; CR, corona radiata; SS, sagittal stratum; IFO, inferior fronto‐occipital fasciculus, SFO, superior fronto‐occipital fasciculus; Average FA, average FA across full skeleton; PCR, posterior corona radiata; ALIC, anterior limb of the internal capsule; FXST, fornix (cres) / stria terminalis