PMID- 36879012 OWN - NLM STAT- MEDLINE DCOM- 20230308 LR - 20230420 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Mar 6 TI - A multicenter phase II trial of anti-EGFR-immunoliposomes loaded with doxorubicin in patients with advanced triple negative breast cancer. PG - 3705 LID - 10.1038/s41598-023-30950-z [doi] LID - 3705 AB - Advanced triple negative breast cancer (TNBC) is an aggressive, but initially chemo-sensitive disease. The prognosis is poor and more than three quarters of patients experience progression 12 months after the initiation of conventional first-line chemotherapy. Approximately two thirds of TNBC express epidermal growth factor receptor 1 (EGFR). We have developed an anti-EGFR targeted nanocontainer drug by inserting anti-EGFR antibody fragments into the membrane of pegylated liposomes (anti-EGFR-ILs-dox). The payload consists of doxorubicin, a standard drug for TNBC. In a first-in-human phase I trial in 26 patients with various advanced solid malignancies, anti-EGFR-ILs-dox has shown little toxicity and encouraging efficacy. In this single-arm phase II trial, we assessed the efficacy of anti-EGFR-ILs-dox as first-line therapy in patients with advanced, EGFR + TNBC. The primary endpoint was progression-free survival at 12 months (PFS12m). Secondary endpoints included overall response rate (ORR), duration of response (DOR), time to progression (TTP), overall survival (OS) and adverse events (AEs). 48 patients received anti-EGFR-ILs-dox 50 mg/m(2) iv, on day one of a 28 days-cycle until progression. The Kaplan-Meier estimate for PFS12m was 13% (one-sided 90% CI 7%, 95% CI [5%, 25%]), median PFS was 3.5 months (95% CI 1.9, 5.4). The trial has not reached its primary endpoint. There were no new toxicity signals. Based on these results, anti-EGFR-ILs-dox should not be further developed for TNBC. It remains an open question whether anti-EGFR-ILs-dox would offer more opportunities in other EGFR-expressing malignancies, where targeting this receptor has already shown anticancer effects.Trial registration: This trial was registered at clinicaltrials.gov: NCT02833766. Registered 14/07/2016. CI - (c) 2023. The Author(s). FAU - Mamot, Christoph AU - Mamot C AD - Cantonal Hospital Aarau, Tellstrasse 25, 5001, Aarau, Switzerland. christoph.mamot@ksa.ch. FAU - Wicki, Andreas AU - Wicki A AD - University and University Hospital Zurich, Ramistrasse 100, 8091, Zurich, Switzerland. andreas.wicki@usz.ch. FAU - Hasler-Strub, Ursula AU - Hasler-Strub U AD - Cantonal Hospital Graubunden, Chur, Switzerland. FAU - Riniker, Salome AU - Riniker S AD - Tumor and Breast Center East, St. Gallen, Switzerland. FAU - Li, Qiyu AU - Li Q AD - Competence Center of the Swiss Group for Clinical Cancer Research (SAKK), Bern, Switzerland. FAU - Holer, Lisa AU - Holer L AD - Competence Center of the Swiss Group for Clinical Cancer Research (SAKK), Bern, Switzerland. FAU - Bartschi, Daniela AU - Bartschi D AD - Competence Center of the Swiss Group for Clinical Cancer Research (SAKK), Bern, Switzerland. FAU - Zaman, Khalil AU - Zaman K AD - University Hospital Lausanne, Lausanne, Switzerland. FAU - von Moos, Roger AU - von Moos R AD - Cantonal Hospital Graubunden, Chur, Switzerland. FAU - Dedes, Konstantin J AU - Dedes KJ AD - Breast Center Zurichsee, Zurich, Switzerland. FAU - Boos, Laura A AU - Boos LA AD - University and University Hospital Zurich, Ramistrasse 100, 8091, Zurich, Switzerland. FAU - Novak, Urban AU - Novak U AD - Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Bodmer, Alexandre AU - Bodmer A AD - University Hospital Geneva, Geneva, Switzerland. FAU - Ritschard, Reto AU - Ritschard R AD - University Hospital Basel, Basel, Switzerland. FAU - Obermann, Ellen C AU - Obermann EC AD - University Hospital Basel, Basel, Switzerland. FAU - Tzankov, Alexandar AU - Tzankov A AD - University Hospital Basel, Basel, Switzerland. FAU - Ackermann, Christoph AU - Ackermann C AD - Spital STS AG, Thun, Switzerland. FAU - Membrez-Antonioli, Veronique AU - Membrez-Antonioli V AD - Hopital du Valais, Hopital de Sion, Sion, Switzerland. FAU - Zurrer-Hardi, Ursina AU - Zurrer-Hardi U AD - Cantonal Hospital Winterthur, Winterthur, Switzerland. FAU - Caspar, Clemens B AU - Caspar CB AD - Cantonal Hospital Baden, Baden, Switzerland. FAU - Deuster, Stefanie AU - Deuster S AD - University Hospital Basel, Basel, Switzerland. FAU - Senn, Martin AU - Senn M AD - University Hospital Basel, Basel, Switzerland. FAU - Winterhalder, Ralph AU - Winterhalder R AD - Hospital Lucerne, Lucerne, Switzerland. FAU - Rochlitz, Christoph AU - Rochlitz C AD - University Hospital Basel, Basel, Switzerland. LA - eng SI - ClinicalTrials.gov/NCT02833766 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20230306 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Liposomes) RN - EC 2.7.10.1 (ErbB Receptors) RN - 80168379AG (Doxorubicin) SB - IM MH - Humans MH - *Liposomes MH - *Triple Negative Breast Neoplasms/drug therapy MH - Drug Delivery Systems MH - ErbB Receptors MH - Doxorubicin/adverse effects PMC - PMC9988854 COIS- K. Dedes: advisory honoraria: AstraZeneca, Daiichi, Novartis. The other authors declare that they have no competing interests. EDAT- 2023/03/07 06:00 MHDA- 2023/03/09 06:00 PMCR- 2023/03/06 CRDT- 2023/03/06 23:19 PHST- 2022/10/04 00:00 [received] PHST- 2023/03/03 00:00 [accepted] PHST- 2023/03/06 23:19 [entrez] PHST- 2023/03/07 06:00 [pubmed] PHST- 2023/03/09 06:00 [medline] PHST- 2023/03/06 00:00 [pmc-release] AID - 10.1038/s41598-023-30950-z [pii] AID - 30950 [pii] AID - 10.1038/s41598-023-30950-z [doi] PST - epublish SO - Sci Rep. 2023 Mar 6;13(1):3705. doi: 10.1038/s41598-023-30950-z.