SLC5A7 and oligodendroglioma: However, comparison of ChT+ and ChT- in oligodendroglioma patients showed a stronger improvement of ChT- patients in reaction time (mean score 45.6 [SD 30.9] vs. 8.5 [SD 29.9], p = 0.033; mean difference 37.1, 95% CI 3.5–70.8, not shown).