ATF4 and diffuse large B-cell lymphoma: Notably, l-glutamine significantly reduced ATF4 translation at a late time point of 96 hours, but not at the earlier 48-hour time point where we already see ATF4 activation after nutrient depletion (Supplementary Fig. S6B), suggesting that there may be additional amino acids contributing to control ATF4 translation in DLBCL cells.