PMID- 37259799 OWN - NLM STAT- MEDLINE DCOM- 20230602 LR - 20240302 IS - 1940-6215 (Electronic) IS - 1940-6207 (Print) IS - 1940-6215 (Linking) VI - 16 IP - 6 DP - 2023 Jun 1 TI - Phase II Trial of Nelipepimut-S Peptide Vaccine in Women with Ductal Carcinoma In Situ. PG - 333-341 LID - 10.1158/1940-6207.CAPR-22-0388 [doi] AB - NeuVax is a vaccine comprised of the HER2-derived MHC class I peptide E75 (nelipepimut-S, NPS) combined with GM-CSF. We completed a randomized trial of preoperative vaccination with NeuVax versus GM-CSF alone in patients with ductal carcinoma in situ (DCIS). The primary objective was to evaluate for NPS-specific cytotoxic T lymphocyte (CTL) responses. Patients with human leukocyte antigen (HLA)-A2-positive DCIS were enrolled and randomized 2:1 to NeuVax versus GM-CSF alone and received two inoculations prior to surgery. The number of NPS-specific CTL was measured pre-vaccination, at surgery, and 1 and 3 to 6 months post-operation by dextramer assay. Differences in CTL responses between groups and between pre-vaccination and 1-month post-operation were analyzed using a two-sample t test or Wilcoxon rank sum test. The incidence and severity of adverse events were compared between groups. Overall, 45 patients were registered; 20 patients were HLA-A2 negative, 7 declined participation, 1 withdrew, and 4 failed screening for other reasons. The remaining 13 were randomized to NeuVax (n = 9) or GM-CSF alone (n = 4). Vaccination was well-tolerated with similar treatment-related toxicity between groups with the majority (>89%) of adverse events being grade 1. The percentage of NPS-specific CTLs increased in both arms between baseline (pre-vaccination) and 1-month post-operation. The increase was numerically greater in the NPS+GM-CSF arm, but the difference was not statistically significant. NPS+GM-CSF is safe and well-tolerated when given preoperatively to patients with DCIS. In patients with HLA-A2-positive DCIS, two inoculations with NPS+GM-CSF can induce in vivo immunity and a continued antigen-specific T-cell response 1-month postsurgery. PREVENTION RELEVANCE: This trial showed that vaccination of patients with HLA-A2-positive DCIS with NeuVax in the preoperative setting can induce a sustained antigen-specific T-cell response. This provides proof of principle that vaccination in the preoperative or adjuvant setting may stimulate an adaptive immune response that could potentially prevent disease recurrence. CI - (c)2023 American Association for Cancer Research. FAU - O'Shea, Anne E AU - O'Shea AE AUID- ORCID: 0000-0003-0785-8563 AD - Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, Texas. FAU - Clifton, Guy T AU - Clifton GT AUID- ORCID: 0000-0001-5962-3876 AD - Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, Texas. FAU - Qiao, Na AU - Qiao N AUID- ORCID: 0009-0009-1912-4832 AD - Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Heckman-Stoddard, Brandy M AU - Heckman-Stoddard BM AUID- ORCID: 0000-0003-1686-7154 AD - Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland. FAU - Wojtowicz, Malgorzata AU - Wojtowicz M AUID- ORCID: 0000-0001-9630-7530 AD - Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland. FAU - Dimond, Eileen AU - Dimond E AUID- ORCID: 0000-0001-7628-1783 AD - Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland. FAU - Bedrosian, Isabelle AU - Bedrosian I AUID- ORCID: 0000-0002-8775-8361 AD - Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Weber, Diane AU - Weber D AUID- ORCID: 0000-0001-9976-3451 AD - Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Garber, Judy E AU - Garber JE AUID- ORCID: 0000-0001-9449-3982 AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. AD - Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, Massachusetts. AD - Center for Cancer Genetics and Prevention, Dana-Farber Cancer Institute, Boston, Massachusetts. AD - Harvard Medical School, Boston, Massachusetts. FAU - Husband, Alexander AU - Husband A AUID- ORCID: 0009-0000-6033-529X AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. AD - Center for Cancer Genetics and Prevention, Dana-Farber Cancer Institute, Boston, Massachusetts. FAU - Pastorello, Ricardo AU - Pastorello R AUID- ORCID: 0000-0002-0124-2437 AD - Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, Massachusetts. AD - Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Lee, J Jack AU - Lee JJ AUID- ORCID: 0000-0001-5469-9214 AD - Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Hernandez, Mike AU - Hernandez M AUID- ORCID: 0000-0002-5074-5460 AD - Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Liu, Diane D AU - Liu DD AUID- ORCID: 0000-0003-3301-0259 AD - Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Vornik, Lana A AU - Vornik LA AUID- ORCID: 0000-0002-1812-0305 AD - Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Brown, Powel H AU - Brown PH AUID- ORCID: 0000-0002-3398-163X AD - Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Alatrash, Gheath AU - Alatrash G AUID- ORCID: 0000-0002-7648-4377 AD - Department of Stem Cell Transplant and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas. FAU - Peoples, George E AU - Peoples GE AUID- ORCID: 0000-0001-7118-8205 AD - Cancer Vaccine Development Program, San Antonio, Texas. FAU - Mittendorf, Elizabeth A AU - Mittendorf EA AUID- ORCID: 0000-0002-9762-8536 AD - Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, Massachusetts. AD - Harvard Medical School, Boston, Massachusetts. AD - Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts. LA - eng GR - HHSN261201200034C/CP/NCI NIH HHS/United States GR - N01CN35159/CA/NCI NIH HHS/United States GR - UG1 CA242609/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Prev Res (Phila) JT - Cancer prevention research (Philadelphia, Pa.) JID - 101479409 RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) RN - 0 (HLA-A2 Antigen) RN - 0 (Peptide Fragments) RN - 0 (Vaccines, Subunit) RN - 0 (Cancer Vaccines) SB - IM MH - Humans MH - Female MH - Granulocyte-Macrophage Colony-Stimulating Factor MH - *Carcinoma, Intraductal, Noninfiltrating/surgery MH - HLA-A2 Antigen MH - Neoplasm Recurrence, Local/pathology MH - Peptide Fragments MH - Vaccines, Subunit/adverse effects MH - *Cancer Vaccines/adverse effects PMC - PMC10903526 MID - NIHMS1897631 COIS- Dr. Peoples has a patent to Nelipepimut-S issued and reports grants from Sellas Life Sciences during conduct of the study. Dr. Mittendorf reports compensated participation on the following scientific advisory boards: Merck, Genomic Health, and Roche/Genetech. Dr. Mittendorf also receives trial support to institution (DFCI) from Roche/Genetech through a SU2C grant. EDAT- 2023/06/01 06:42 MHDA- 2023/06/02 06:43 PMCR- 2024/02/29 CRDT- 2023/06/01 04:23 PHST- 2022/08/29 00:00 [received] PHST- 2023/01/31 00:00 [revised] PHST- 2023/04/24 00:00 [accepted] PHST- 2023/06/02 06:43 [medline] PHST- 2023/06/01 06:42 [pubmed] PHST- 2023/06/01 04:23 [entrez] PHST- 2024/02/29 00:00 [pmc-release] AID - 726436 [pii] AID - 10.1158/1940-6207.CAPR-22-0388 [doi] PST - ppublish SO - Cancer Prev Res (Phila). 2023 Jun 1;16(6):333-341. doi: 10.1158/1940-6207.CAPR-22-0388.