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Fleischmann J, Hildebrand LS, Kuhlmann L, Fietkau R, Distel LV. The Effect of Xevinapant Combined with Ionizing Radiation on HNSCC and Normal Tissue Cells and the Impact of Xevinapant on Its Targeted Proteins cIAP1 and XIAP. Cells 2023; 12:1653. [PMID: 37371123 DOI: 10.3390/cells12121653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/24/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
The poor prognosis of HNSCC is partly due to treatment resistance. The SMAC mimetic Xevinapant is a promising new approach to targeted cancer therapy. Xevinapant inhibits cIAP1/2 and XIAP, leading to apoptosis, necroptosis and inhibition of prosurvival signaling. Combining Xevinapant with IR could improve therapeutic potential. The effect of Xevinapant in combination with IR on HNSCC and healthy tissue cells was investigated. Cell growth, cell death, clonogenic survival and DNA double-strand breaks (DSBs) were studied, and intracellular cIAP1 and XIAP levels were evaluated. Xevinapant had cytostatic and cytotoxic, as well as radiosensitizing, effects on the malignant cells, while healthy tissue cells were less affected. Apoptotic and necrotic cell death was particularly affected, but the increase in residual DSBs and the reduced survival implied an additional effect of Xevinapant on DNA damage repair and other cell inactivation mechanisms. cIAP1 and XIAP levels varied for each cell line and were affected by Xevinapant and IR treatment. There was an association between higher IAP levels and increased cell death. Xevinapant appears to be a potent new drug for HNSCC therapy, especially in combination with IR. IAP levels could be an indicator for impaired DNA damage repair and increased susceptibility to cellular stress.
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Affiliation(s)
- Julia Fleischmann
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Laura S Hildebrand
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Lukas Kuhlmann
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Rainer Fietkau
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Luitpold V Distel
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
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Tao Y, Sun XS, Pointreau Y, Le Tourneau C, Sire C, Kaminsky MC, Coutte A, Alfonsi M, Calderon B, Boisselier P, Martin L, Miroir J, Ramee JF, Delord JP, Clatot F, Rolland F, Villa J, Magne N, Elicin O, Gherga E, Nguyen F, Lafond C, Bera G, Calugaru V, Geoffrois L, Chauffert B, Damstrup L, Crompton P, Ennaji A, Gollmer K, Nauwelaerts H, Bourhis J. Extended follow-up of a phase 2 trial of xevinapant plus chemoradiotherapy in high-risk locally advanced squamous cell carcinoma of the head and neck: a randomised clinical trial. Eur J Cancer 2023; 183:24-37. [PMID: 36796234 DOI: 10.1016/j.ejca.2022.12.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/14/2022] [Accepted: 12/17/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION We report long-term efficacy and overall survival (OS) results from a randomised, double-blind, phase 2 study (NCT02022098) investigating xevinapant plus standard-of-care chemoradiotherapy (CRT) vs. placebo plus CRT in 96 patients with unresected locally advanced squamous cell carcinoma of the head and neck (LA SCCHN). METHODS Patients were randomised 1:1 to xevinapant 200 mg/day (days 1-14 of a 21-day cycle for 3 cycles), or matched placebo, plus CRT (cisplatin 100 mg/m2 every 3 weeks for 3 cycles plus conventional fractionated high-dose intensity-modulated radiotherapy [70 Gy/35 F, 2 Gy/F, 5 days/week for 7 weeks]). Locoregional control, progression-free survival, and duration of response after 3 years, long-term safety, and 5-year OS were assessed. RESULTS The risk of locoregional failure was reduced by 54% for xevinapant plus CRT vs. placebo plus CRT but did not reach statistical significance (adjusted hazard ratio [HR] 0.46; 95% CI, 0.19-1.13; P = .0893). The risk of death or disease progression was reduced by 67% for xevinapant plus CRT (adjusted HR 0.33; 95% CI, 0.17-0.67; P = .0019). The risk of death was approximately halved in the xevinapant arm compared with placebo (adjusted HR 0.47; 95% CI, 0.27-0.84; P = .0101). OS was prolonged with xevinapant plus CRT vs. placebo plus CRT; median OS not reached (95% CI, 40.3-not evaluable) vs. 36.1 months (95% CI, 21.8-46.7). Incidence of late-onset grade ≥3 toxicities was similar across arms. CONCLUSIONS In this randomised phase 2 study of 96 patients, xevinapant plus CRT demonstrated superior efficacy benefits, including markedly improved 5-year survival in patients with unresected LA SCCHN.
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Affiliation(s)
- Yungan Tao
- Department of Radiation Oncology, Institut Gustave Roussy, Villejuif, France
| | - Xu-Shan Sun
- Department of Radiation Oncology, Nord Franche-Comté de Montbéliard and CHRU de Besançon, Besançon, France
| | - Yoann Pointreau
- Oncologie-Radiothérapie, Institut Inter-Régional de Cancérologie, Centre Jean Bernard, Le Mans, France
| | - Christophe Le Tourneau
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris-Saclay University, Paris, France
| | - Christian Sire
- South Brittany Hospital Center, Hôpital du Scorff Radiothérapie, Lorient, France
| | - Marie-Christine Kaminsky
- Institut Cancérologie de Lorraine - Alexis Vautrin, Oncologie Médicale, Vandoeuvre-lès-Nancy, France
| | | | - Marc Alfonsi
- Institut Sainte Catherine, Radiothérapie, Avignon, France
| | | | - Pierre Boisselier
- Institut du Cancer de Montpellier, Val d'Aurelle, Oncologie-Radiothérapie, Montpellier, France
| | - Laurent Martin
- Centre de Radiothérapie Guillaume le Conquérant, Le Havre, France
| | - Jessica Miroir
- Jean Perrin Center, Radiothérapie, Clermont-Ferrand, France
| | | | - Jean-Pierre Delord
- Medical Oncology Dept, Institut Claudius Regaud, IUCT-Oncopole, Toulouse, France
| | - Florian Clatot
- Henri Becquerel Centre, Service Oncologie Médicale rue d'Amiens, Rouen, France
| | - Frederic Rolland
- Institut de Cancérologie de l'Ouest, Centre René Gauducheau, Saint-Herblain, France
| | - Julie Villa
- CHU Grenoble, Radiothérapie, Pôle de Cancérologie, Grenoble, France
| | - Nicolas Magne
- Institut de Cancérologie Lucien Neuwirth, Radiothérapie, Saint-Priest-en-Jarez, France
| | - Olgun Elicin
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Elisabeta Gherga
- Department of Radiation Oncology, Nord Franche-Comté de Montbéliard and CHRU de Besançon, Besançon, France
| | - France Nguyen
- Department of Radiation Oncology, Institut Gustave Roussy, Villejuif, France
| | - Cédrik Lafond
- Oncologie-Radiothérapie, Institut Inter-Régional de Cancérologie, Centre Jean Bernard, Le Mans, France
| | - Guillaume Bera
- South Brittany Hospital Center, Hôpital du Scorff Radiothérapie, Lorient, France
| | - Valentin Calugaru
- Radiotherapy Oncology Department, Institut Curie, Paris-Saclay University, Paris, France
| | - Lionnel Geoffrois
- Institut Cancérologie de Lorraine - Alexis Vautrin, Oncologie Médicale, Vandoeuvre-lès-Nancy, France
| | - Bruno Chauffert
- CHU Amiens Picardie, Oncologie-Radiothérapie, Amiens, France
| | | | | | | | | | | | - Jean Bourhis
- CHUV, Radiation Oncology Department, Bâtiment Hospitalier, Lausanne, Switzerland.
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Ferris RL, Harrington K, Schoenfeld JD, Tahara M, Esdar C, Salmio S, Schroeder A, Bourhis J. Inhibiting the inhibitors: Development of the IAP inhibitor xevinapant for the treatment of locally advanced squamous cell carcinoma of the head and neck. Cancer Treat Rev 2023; 113:102492. [PMID: 36640618 DOI: 10.1016/j.ctrv.2022.102492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/23/2022] [Accepted: 11/27/2022] [Indexed: 12/03/2022]
Abstract
Standard of care for patients with locally advanced squamous cell carcinoma of the head and neck (LA SCCHN) is surgery followed by chemoradiotherapy (CRT) or definitive CRT. However, approximately 50 % of patients with LA SCCHN develop disease recurrence or metastasis within 2 years of completing treatment, and the outcome for these patients is poor. Despite this, the current treatment landscape for LA SCCHN has remained relatively unchanged for more than 2 decades, and novel treatment options are urgently required. One of the key causes of disease recurrence is treatment resistance, which commonly occurs due to cancer cells' ability to evade apoptosis. Evasion of apoptosis has been in part attributed to the overexpression of inhibitor of apoptosis proteins (IAPs). IAPs, including X-linked IAP (XIAP) and cellular IAP 1 and 2 (cIAP1/2), are a class of proteins that regulate apoptosis induced by intrinsic and extrinsic apoptotic pathways. IAPs have been shown to be overexpressed in SCCHN, are associated with poor clinical outcomes, and are, therefore, a rational therapeutic target. To date, several IAP inhibitors have been investigated; however, only xevinapant, a potent, oral, small-molecule IAP inhibitor, has shown clinical proof of concept when combined with CRT. Specifically, xevinapant demonstrated superior efficacy in combination with CRT vs placebo + CRT in a randomized, double-blind, phase 2 trial in patients with unresected LA SCCHN. Here, we describe the current treatment landscape in LA SCCHN and provide the rationale for targeting IAPs and the clinical data reported for xevinapant.
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Affiliation(s)
- Robert L Ferris
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
| | | | | | - Makoto Tahara
- National Cancer Center Hospital East, Kashiwa, Chiba Prefecture, Japan.
| | | | | | | | - Jean Bourhis
- Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.
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