PMID- 35211402 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220226 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 12 DP - 2022 TI - Case Report: Pathological Complete Response in a Lung Metastasis of Phyllodes Tumor Patient Following Treatment Containing Peptide Neoantigen Nano-Vaccine. PG - 800484 LID - 10.3389/fonc.2022.800484 [doi] LID - 800484 AB - Some of the mutant peptides produced by gene mutation transcription and translation have the ability to induce specific T cells, which are called new antigens. Neoantigen-based peptide, DNA, RNA, and dendritic cell vaccines have been used in the clinic. In this paper, we describe a lung metastasis of a phyllodes tumor patient demonstrating pathological complete response following treatment containing personalized multi-epitope peptide neoantigen nano-vaccine. Based on whole-exome sequencing (WES), RNA sequencing, and new antigen prediction, several mutated peptide fragments were predicted to bind to the patient's human leukocyte antigen (HLA) allotypes, including ten peptides with high predicted binding affinity for six genes. The pulmonary metastases remained stable after the four cycles of anti-PD1 and anlotinib. After the addition of the multi-epitope peptide neoantigen nano-vaccine, the tumor began to collapse and contracture developed, accompanied by a decrease of tumor markers to normal, and complete pathological remission was achieved. With the use of the vaccination, recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) was used every time, and low-dose cyclophosphamide was injected every 3 weeks to improve efficacy. Peripheral blood immune monitoring demonstrated immune reactivity against a series of peptides, with the most robust post-vaccine T-cell response detected against the HLA-DRB1*0901-restricted SLC44A5 V54F peptide. CI - Copyright (c) 2022 Sha, Liu, Xie, Shao, Yu, Cen, Li, Liu, Qian, Wei and Liu. FAU - Sha, Huizi AU - Sha H AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Liu, Qin AU - Liu Q AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Xie, Li AU - Xie L AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Shao, Jie AU - Shao J AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Yu, Lixia AU - Yu L AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Cen, Lanqi AU - Cen L AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Li, Lin AU - Li L AD - Department of Pathology of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Liu, Fangcen AU - Liu F AD - Department of Pathology of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Qian, Hanqing AU - Qian H AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Wei, Jia AU - Wei J AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. FAU - Liu, Baorui AU - Liu B AD - The Comprehensive Cancer Centre of Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. LA - eng PT - Case Reports DEP - 20220208 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC8861377 OTO - NOTNLM OT - combination therapy OT - nano-vaccine OT - neoantigen OT - personalized OT - phyllodes tumor COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/02/26 06:00 MHDA- 2022/02/26 06:01 PMCR- 2022/01/01 CRDT- 2022/02/25 05:38 PHST- 2021/10/23 00:00 [received] PHST- 2022/01/10 00:00 [accepted] PHST- 2022/02/25 05:38 [entrez] PHST- 2022/02/26 06:00 [pubmed] PHST- 2022/02/26 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2022.800484 [doi] PST - epublish SO - Front Oncol. 2022 Feb 8;12:800484. doi: 10.3389/fonc.2022.800484. eCollection 2022.