Abdelghani, Méher Ben
Mayo Clinic
Department of Medical Oncology, European Oncology Institute of Strasbourg, Strasbourg, France
Citations 2
Efficacy of immunotherapy in gastrointestinal (GI) tumors with mismatch repair deficient (MMRd) unusual phenotype: an AGEO real-world study
Alouani, Emily , Tougeron, David , Roces, Guillaume, Pernot, Simon , Dutherage, Marie, Cohen, Romain , Hafliger, Émilie , Sclafani, Francesco , Masson, Thérèse, Coutzac, Clélia , Mazard, Thibault , Jaffrelot, Marion, Guimbaud, Rosine , Sèlves, Janick , Taieb, Julien , Tougeron, David , Cohen, Romain , Coutzac, Clélia , Taı̈eb, Julien , Hollebecque, Antoine , Parent, Pauline , Sinicrope, Frank A. , Hautefeuille, Vincent , Abdelghani, Méher Ben , Müller, Marie , Perkins, Géraldine , Aparicio, Thomas , Decraecker, Marie
Journal for ImmunoTherapy of Cancer | October 30, 2025 | Volume: 13 | Issue: 10 | Pages: e011436
Background Tumors with mismatch repair deficiency (MMRd) classically display concomitant loss of MLH1/PMS2 or MSH2/MSH6 on immunohistochemistry (IHC) with microsatellite instability-high (MSI-High) status on molecular testing. Nevertheless, a different phenotype can occur in up to 15% of MMRd tumors (unusual phenotype). Data on the efficacy of immunotherapy in this population remain scarce. Methods We conducted a retrospective study within the IMMUNODIG MSI cohort including patients with advanced gastrointestinal MMRd tumors treated with immune checkpoint blockade in the real-world setting. We selected patients with both IHC and MSI assays data available. Unusual MMRd tumors were classified into four distinct groups: (1) isolated loss of PMS2 or MSH6 with MSI-H (isolated/MSI-H), (2) complex loss of MMR proteins with MSI-H (complex/MSI-H), (3) loss of one or more MMR proteins without MSI-H (MMRd-IHC/microsatellite stability (MSS) or MSI-low (MSI-L)), and (4) four MMR proteins retained with MSI-H (retained IHC/MSI-H). Results Out of 759 patients in the IMMUNODIG-MSI cohort, 571 patients met inclusion criteria. Of these, 90 (15.8%) had an unusual phenotype (47 isolated/MSI-H, 19 complex/MSI-H, 16 MMRd-IHC/MSS or MSI-L and 8 retained IHC/MSI-H). Compared with classical phenotypes, patients with a tumor harboring an unusual phenotype had a younger age at treatment (p=0.005), increased RAS mutation (p=0.005), reduced BRAF p.V600E mutation rates (p<0.001), a higher proportion of Lynch syndrome (p<0.001) and a higher prevalence of non-colorectal cancers (p=0.021). After a median follow-up of 28.1 months (mo), there was a significant difference in progression-free survival, with median values of not reached, 66.4 mo, 37.2 mo, 18.3 mo and 5.5 mo for complex/MSI-H, isolated/MSI-H, classical, retained IHC/MSI-H and MMRd-IHC/MSS or MSI-L subgroups, respectively (p<0.001). Notably, objective response rates were 59.1%, 58.7%, and 63.2% for complex/MSI-H, isolated/MSI-H and classical contrasting with 50% and 25% for retained IHC/MSI-H and MMRd-IHC/MSS or MSI-L, with no complete response observed in the latter two. Conclusion Our findings underscore the need for dual testing and advocate for the presence of both MMRd-IHC and MSI-H for optimal immunotherapy response. Of note, complex MMR aberrations and isolated PMS2/MSH6 losses with MSI-H may represent promising candidates for enhanced immunotherapy efficacy.
Tumor Treating Fields With Gemcitabine and Nab-Paclitaxel for Locally Advanced Pancreatic Adenocarcinoma: Randomized, Open-Label, Pivotal Phase III PANOVA-3 Study
Babiker, Hani M. , Picozzi, Vincent J. , Chandana, Sreenivasa R , Melichar, Bohuslav, Kasi, Anup , Gang, Jin, Gállego, Javier , Bullock, Andrea J. , Chunyi, Hao, Hitre, Erika, Osipov, Arsen , Alés, Inmaculada, Dragovich, Tomislav, Lee, Woo Jin , Feeney, Kynan, Ueno, Makoto , Seufferlein, Thomas , Investigators, on behalf of the PANOVA-3 Study, Osipov, Arsen, Matrana, Marc , Blondin, Nicholas, Shroff, Rachna T. , Orr, Douglas, Anderson, Michael J. , Shields, Anthony F. , Hamm, John , Bullock, Andrea, Nagireddy, Sumana, Kolodney, Joanna, Dragovich, Tomislav, Maniam, Ajit, Sears, Judith D., Stilwill, Joseph, Cusnir, Mike , Niewiaroska, Anna, Small, William, Kasi, Anup, Tache, Jason, Ross, Sharona, Shihabi, Samer, Gandhi, Sunil, Reeves, J. N. , Green, Garrett , Feinstein, Trevor, Huyck, Timothy K., Ramdin, Nadia, Marsh, Robert , Jiang, Yixing , Hatoum, Hassan , Manda, Sudhir, Kochenderfer, Mark D., Illum, Henrik, Richards, Donald , Valilis, P., Wong, Lucas, Newton, Herbert B. , Abdelrahim, Maen, Einspahr, David, Siegel, Richard, McKenney, Scott, Narang, Mohit , Cárdenes, Higinia R. , Thanikachalam, Kannan , Raff, Joshua P. , Ye, Joseph , Behl, Deepti , Kam, Audrey E., DeRose, Paul, Tasneem, A. , Brenner, Warren, Santos, Jennifer De Los , Rausch, D C, Trikha, Gaurav, Gabrail, Nashat , Mowat, Rex B., Jahangir, Khawaja, Schumaker, Robert P. , Soffen, Edward , Bravin, Eric, Gupta, Mukul Kumar , Bedoya-Apraez, Ivan Dario, Kang, Tyler Y., Lemay, Frédéric , Vincent, Mark , Létourneau, Richard, Doehring, Christine, Haberkorn, Mike, Rußwurm, Karen, Chater, Jack, Küng, Marc , Schacher, Sabine, Passhak, Maria , Geva, Ravit , Hubert, Ayala, Golan, Talia , Senellart, Hélène, Trouilloud, Isabelle , Blan, Jean-Frederic, Dourthe, Luis-Marie, Roy, Florence Le, Martin-Babau, J., Greil, Richard , Schreil, Georg, Gerger, Armin , Eisterer, Wolfgang , Mercadé, T. Macarulla, Cubillo, Antonio , Pons, Francesc Valladares, Díaz, Inmaculada Alés, Rivera, Fernando , Sarvise, Mariano Ponz, Airoldi, Mario , Bellotti, Giovanna, Corsi, Domenico , Antonuzzo, Lorenzo , Melichar, Bohuslav, Holečková, Petra , Kotasek, Rostislav, Němeček, Radim , Cutsem, Eric van, Laethem, Jean‐Luc Van , Sym, Sun Jin , Kim, Jin Young , Oh, Sang Cheul , Park, Joon Oh, Kim, Jin Won , Lee, Myung Ah , Choi, Hye Jin, Kang, Seok Yun , Mruk, Andrzej, Freier, Beata, Kosakowska, Ewa Anna, Kocsis, Judit, Csőszi, Tibor , Hitre, Erika, Al-Farhat, Yousuf, Cang, Shundong , Jin, Gang , Zuo, Changzeng, Song, Lijie, Wu, Zheng , Gao, Jie , Zhang, Tao� , Wang, Yusheng , Yuan, Xin , Li, Zhi-Hua , Chen, Rufu , Cai, Xiujun , Zhu, Zhizhen, Bai, Yuxian , Bai, Chunmei, Yau, Thomas, Joubert, Warren , Wong, Ka Yeung Mark, Harris, Marion , Mišir, Ana, Faccio, Adilson , Cruz, Felipe Melo , Azevedo, Srergio De, Victorino, Ana Paula , Paiva, Tadeu Ferreira, Franke, Fábio , Tiscoski, Katsuki Arima , Parolla, Gabriel, Lilno, Flora, Siqueira, Mariana Bruno , Lyra, Marcos, Lira, Jose Luis Martinez, Oliva, Dolores Mendoza, Vazquez, Arturo, Luviano, Jesus Elvis Cabrera, Gutiérrez, Erika Castillo , Camargo, Vanessa Rosas, Guerra, Cristian Chavez, Flores, Osvaldo Hernandez, Contreras, Jessica Reyes, Villanueva, Ángel Gómez, Villanueva, Omar Zayas, Bullock, Andrea , Wyrwicz, Lucjan , Osipov, Arsen , De La Fouchardiere, Christelle , Lee, Woojin , Ueno, Makoto , Van Cutsem, Eric , Macarulla, Teresa , Babiker, Hani , Antonuzzo, Lorenzo , Melichar, Bohuslav, Kasi, Anup , Gang, Jin, Gallego, Javier , Hitre, Erika, Fouchardière, Christelle de la , Dragovich, Tomislav, Philip, Philip A. , Cutsem, Eric Van , Macarulla, Teresa , Investigators, on behalf of the PANOVA-3 Study, Spigel, David R. , Osipov, Arsen, Lou, Emil , Bullock, Andrea, Dragovich, Tomislav, Coveler, Andrew L. , Arena, Francis P. , Kasi, Anup, Ross, Sharona , Reeves, James, Green, Garrett, Uemura, Marc Isamu , Ye, Joseph, Wang, James Z. , Rausch, Daniel, Park, Jae‐Hyun , Schumaker, Robert, Gupta, Mukul, Letourneau, Richard, Fuchs, Martin , Vogel, Arndt , Chater, Jack, Schacher, Sabine, Stemmer, Salomon M. , Dourthe, Luis-Marie, Abdelghani, Méher Ben , Pons, Francesc Valladares, Guillén‐Ponce, Carmen , Yayá, Ricardo , Ponz‐Sarvisé, Mariano , Vincenzi, Bruno , Melichar, Bohuslav, Petruzelka, Lubos B. , Cutsem, Eric van, Borbath, Ivan , Hwang, Jun‐Eul , Oh, Sung Yong , Lee, Moon Hee , Choi, Hye Jin , Chon, Hong Jae , Ramlau, Rodryg , Mruk, Andrzej, Hitre, Erika, Bassam, Ali, Hao, Chunyi , Liang, Bo , Li, Wei , Bai, Chunmei , Joubert, Warren, Marx, Gavin M. , Azevedo, Srergio De, Hoff, Paulo M. , Vazquez, Arturo, Guerra, Cristian Chavez, Cortez, David Orta, Campos-Gómez, Saúl , Espinoza, Iván Romarico González
Journal of Clinical Oncology | May 31, 2025 | Volume: 43 | Issue: 21 | Pages: 2350-2360
PURPOSE Tumor treating fields (TTFields) use alternating electric fields to disrupt cancer cell proliferation. Feasibility of TTFields therapy with gemcitabine/nab-paclitaxel was previously demonstrated in patients with advanced pancreatic adenocarcinoma. PANOVA-3 was designed to confirm safety and efficacy of TTFields in patients with unresectable locally advanced pancreatic adenocarcinoma (LA-PAC). METHODS In this global phase III trial, 571 patients with newly diagnosed LA-PAC were randomly assigned to receive gemcitabine 1,000 mg/m 2 and nab-paclitaxel 125 mg/m 2 by intravenous infusion once a day on days 1, 8, and 15 of a 28-day cycle with or without TTFields. The primary end point was overall survival (OS). Secondary end points included progression-free survival (PFS), local PFS, pain-free survival, and overall response rate (ORR). Distant PFS was analyzed post hoc. RESULTS OS was significantly prolonged using TTFields with gemcitabine/nab-paclitaxel versus gemcitabine/nab-paclitaxel (median, 16.2 months [95% CI, 15.0 to 18.0] v 14.2 months [95% CI, 12.8 to 15.4]; hazard ratio [HR], 0.82 [95% CI, 0.68 to 0.99]; P = .039). PFS, local PFS, and ORR were not improved. Pain-free survival was significantly prolonged with TTFields with gemcitabine/nab-paclitaxel (median, 15.2 months [95% CI, 10.3 to 22.8] v 9.1 months [95% CI, 7.4 to 12.7]; HR, 0.74 [95% CI, 0.56 to 0.97]; P = .027), as was distant PFS (median, 13.9 months [95% CI, 12.2 to 16.8] v 11.5 months [95% CI, 10.4 to 12.9]; HR, 0.74 [95% CI, 0.57 to 0.96]; P = .022). Device-related skin adverse events (AEs) were experienced by 76.3% of patients. Most device-related skin AEs were mild to moderate, with 7.7% of patients reporting a grade 3 AE. CONCLUSION This study demonstrated significant OS, pain-free survival, and distant PFS benefits for TTFields with gemcitabine/nab-paclitaxel versus gemcitabine/nab-paclitaxel in patients with unresectable LA-PAC, with no additive systemic toxicity.