“…Oral infections, reported since the 1970s (Greenberg and Cohen, 1977; Tyldesley et al , 1979), occur mainly during phases 1 and 2 and may present with ulceration that may be aphthous‐like and may be due to infections or drugs (including immunosuppressive agents such as sirolimus or other mTOR inhibitors) (Formica et al , 2003; Mahé et al , 2005; Chuang and Langone, 2007). They have been attributed to almost all immunosuppressive drugs [see, for example, papers (Habib et al , 2010; Mawardi et al , 2010; Sasaoka et al , 2010; Weng et al , 2011) regarding sirolimus, tacrolimus, everolimus, and mycophenolate mofetil, respectively]. Symptoms include discomfort and pain, which can be so severe as to impair eating, with consequent malnourishment and require local anesthetic applications (López‐Pintor et al , 2009; Vermeulen et al , 2010).…”