“…The SABRINA (FL) and MabEase (DLBCL) trials showed the occurrence of ARRs in 20·9–48·2% of patients during up to 7 cycles of subcutaneous rituximab for the first‐line induction treatment of FL and DLBCL, mainly manageable mild to moderate events − only reaching grade 3 in 2·7–3·1% of patients−, which most frequently included injection‐site reactions (≥5%), such as erythema, pruritus, rash, pain, bruising, discoloration, haematoma, hypertrophy, induration or inflammation/swelling (Lugtenburg et al , ; Davies et al , ). Although the PrefMab (FL and DLBCL) trial reported lower rates of ARRs, ranging from 10·4% to 21·1% and with few overall cases of erythema (1·8%) or injection site erythema (1·5%), the differences in trial design should be noted, as this trial used a crossover approach of intravenous and subcutaneous rituximab administration with the latter being administered for up to 3–4 cycles (Rummel et al , ). With regard to maintenance treatment for FL, the SparkThera trial also supported an acceptable and manageable safety profile, with 31% of patients experiencing ARRs after subcutaneous rituximab injection for up to 2 years, which were mainly mild to moderate, rarely required treatment, and most commonly included erythema (13%), injection site erythema (5%) and myalgia (5%) (Salar et al , ).…”