https://www.selleckchem.com/products/SB-202190.html Of 13 patients undergoing surgery, 12 (92%) had early-stage disease. Forty-two (84%) of the 50 patients tested positive for Lynch syndrome (LS) with enrichment of germline MSH2 and MSH6 mutations when compared to 193 LS-associated colon cancer patients (MSH2, 57% vs 36%; MSH6, 17% vs 9%; P less then .003). CONCLUSIONS Over one-fourth of dMMR rectal tumors treated with neoadjuvant chemotherapy exhibited disease progression. Conversely, dMMR rectal tumors were sensitive to chemoradiation. MMR status should be performed upfront in all locally advanced rectal tumors with careful monitoring for response on neoadjuvant chemotherapy and genetic testing for LS in dMMR rectal cancer patients. Copyright ©2020, American Association for Cancer Research.PURPOSE In this phase I study (NCT01307267) we evaluated safety, pharmacokinetics, clinical activity, and pharmacodynamics of treatment with utomilumab plus rituximab in patients with relapsed/refractory follicular (FL) and other CD20+ non-Hodgkin lymphomas (NHLs). EXPERIMENTAL DESIGN Primary objectives were to assess treatment safety and tolerability for estimating the maximum tolerated dose (MTD), using a modified time-to-event continual reassessment method, and selecting the recommended phase II dose (RP2D). RESULTS Sixty-seven patients received utomilumab (0.03-10.0 mg/kg every 4 weeks [Q4W]) and rituximab (375 mg/m2 weekly) in the dose escalation groups or utomilumab (1.2 mg/kg Q4W) plus rituximab in the dose expansion cohort. No patient experienced DLTThe MTD for utomilumab in combination with rituximab was not reached and estimated to be ≥10 mg/kg Q4W. The majority of the utomilumab treatment-related adverse events (AEs) were grade 1-2; the most common AE was fatigue (16.4%). The pharmacokinetics of utomilumab in combination with rituximab was linear in the 0.03-10 mg/kg dose range. A low incidence (1.5%) of treatment-induced anti-drug antibodies against utomilumab was ob