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Mell LK, Pugh SL, Jones CU, Nelson TJ, Zakeri K, Rose BS, Zeitzer KL, Gore EM, Bahary JP, Souhami L, Michalski JM, Hartford AC, Mishra MV, Roach M, Parliament MB, Choi KN, Pisansky TM, Husain SM, Malone SC, Horwitz EM, Feng F. Effects of Androgen Deprivation Therapy on Prostate Cancer Outcomes According to Competing Event Risk: Secondary Analysis of a Phase 3 Randomised Trial. Eur Urol 2024; 85:373-381. [PMID: 36710205 PMCID: PMC10372191 DOI: 10.1016/j.eururo.2023.01.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/22/2022] [Accepted: 01/17/2023] [Indexed: 01/29/2023]
Abstract
BACKGROUND Previous studies indicate that the benefit of short-term androgen deprivation therapy (ADT) with radiotherapy (RT) for prostate cancer depends on competing risks. OBJECTIVE To determine whether a quantitative method to stratify patients by risk for competing events (omega score) could identify subgroups that selectively benefit from ADT. DESIGN, SETTING, AND PARTICIPANTS An ancillary analysis of NRG/RTOG 9408 phase 3 trial (NCT00002597) involving 1945 prostate cancer patients was conducted. INTERVENTION Short-term ADT. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS We applied generalised competing event regression models incorporating age, performance status, comorbidity, T category, Gleason score (GS), and prostate-specific antigen (PSA), to stratify patients according to relative hazards for primary cancer-related events (distant metastasis or prostate cancer death) versus competing noncancer mortality. We tested interactions between ADT and subgroups defined by standard risk criteria versus relative risk (RR) using the omega score. RESULTS AND LIMITATIONS T2b, higher GS, and higher PSA were associated with an increased RR for cancer-related versus competing mortality events (a higher omega score); increased age and comorbidity were associated with a decreased omega score. Of 996 patients with low-risk/favourable intermediate-risk (FIR) disease, 286 (28.7%) had a high omega score (≥0.314). Of 768 patients with unfavourable intermediate-risk disease, 175 (22.8%) had a low omega score. The overall discordance in risk classification was 26.1%. Both standard criteria and omega score identified significant interactions for the effect of ADT on cancer-related events and late mortality in low- versus high-risk subgroups. Within the low-risk/FIR subgroup, a higher omega score identified patients in whom ADT significantly reduced cancer events and improved event-free survival. Limitations are the need for external/prospective validation and lower RT doses than contemporary standards. CONCLUSIONS Stratification based on competing event risk is useful for identifying prostate cancer patients who selectively benefit from ADT. PATIENT SUMMARY We analysed the effectiveness of androgen deprivation therapy (ADT) for localised prostate cancer among patients, defined by the relative risk (RR) for cancer versus noncancer events. Among patients with traditional low-risk/favourable intermediate-risk disease, those with a higher RR benefitted from short-term ADT.
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Affiliation(s)
- Loren K Mell
- University of California San Diego, Moores Cancer Center, San Diego, CA, USA.
| | - Stephanie L Pugh
- NRG Oncology Statistics and Data Management Center, Philadelphia, PA, USA
| | | | - Tyler J Nelson
- University of California San Diego, Moores Cancer Center, San Diego, CA, USA
| | - Kaveh Zakeri
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Brent S Rose
- University of California San Diego, Moores Cancer Center, San Diego, CA, USA
| | | | - Elizabeth M Gore
- Froedtert and the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Jean-Paul Bahary
- CHUM - Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada
| | - Luis Souhami
- The Research Institute of the McGill University Health Centre (MUHC), Montreal, QC, Canada
| | | | - Alan C Hartford
- Dartmouth-Hitchcock Medical Center/Norris Cotton Cancer Center, Lebanon, NH, USA
| | - Mark V Mishra
- University of Maryland/Greenebaum Cancer Center, Baltimore, MD, USA
| | - Mack Roach
- UCSF Medical Center-Mount Zion, San Francisco, CA, USA
| | | | - Kwang N Choi
- State University of New York Downstate Medical Center, Brooklyn, NY, USA
| | | | | | | | | | - Felix Feng
- UCSF Medical Center-Mount Zion, San Francisco, CA, USA
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Kim SS, Liu HC, Mell LK. Treatment Considerations for Patients with Locoregionally Advanced Head and Neck Cancer with a Contraindication to Cisplatin. Curr Treat Options Oncol 2023; 24:147-161. [PMID: 36696081 PMCID: PMC9992074 DOI: 10.1007/s11864-023-01051-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2022] [Indexed: 01/26/2023]
Abstract
OPINION STATEMENT Significant advancements have been made in the treatment of locally advanced head and neck cancer, predominantly driven by the integration of concurrent chemotherapy with radiation therapy as a standard of care for many patients. The most heavily investigated chemotherapeutic is cisplatin, yet many patients are ineligible for cisplatin due to the presence of pre-existing medical comorbidities. Moreover, given the toxicity profile of cisplatin, identifying which patients stand to benefit from cisplatin is challenging, which is particularly evident in older patients. Efforts to better risk-stratify patients based on age, performance status, and the degree of pre-existing comorbidities are ongoing and have been increasingly utilized in national clinical trials. In parallel, exploration into alternative systemic agents, including novel targeted therapies and immunotherapies, in cisplatin-ineligible patients are rapidly expanding. Cumulatively, identifying appropriate treatment paradigms in patients who harbor contraindications to cisplatin can not only improve clinical outcomes but also critically mitigate detrimental adverse effects.
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Affiliation(s)
- Sangwoo S Kim
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, 3855 Health Sciences Drive, MC0843, La Jolla, CA, 92093, USA
| | - Hannah C Liu
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, 3855 Health Sciences Drive, MC0843, La Jolla, CA, 92093, USA
| | - Loren K Mell
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, 3855 Health Sciences Drive, MC0843, La Jolla, CA, 92093, USA.
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Mell LK. Problems With Interpreting Treatment Effects in Observational Competing Risks Data. JAMA Otolaryngol Head Neck Surg 2023; 149:183. [PMID: 36480179 DOI: 10.1001/jamaoto.2022.4035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Loren K Mell
- Moores Cancer Center, University of California, San Diego
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Sun L, Cohen RB. Problems With Interpreting Treatment Effects in Observational Competing Risks Data-Reply. JAMA Otolaryngol Head Neck Surg 2023; 149:183-184. [PMID: 36480187 DOI: 10.1001/jamaoto.2022.4038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lova Sun
- Division of Hematology Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Roger B Cohen
- Division of Hematology Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
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Underutilization of brachytherapy for cervical cancer in the United States. Brachytherapy 2023; 22:15-20. [PMID: 36504160 DOI: 10.1016/j.brachy.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/12/2022] [Indexed: 12/13/2022]
Abstract
Brachytherapy is a critical component of the definitive management of cervical cancer and allows for the safe delivery of about half of the total effective radiation dose needed for optimal outcomes. Moreover, the dose distribution of brachytherapy is highly conformal, allowing for a therapeutic index currently unmatched by alternative techniques. However, a modern brachytherapy program requires special equipment, infrastructure, and procedural expertise. Unfortunately, multiple lines of evidence suggest that brachytherapy is currently underutilized in the United States. In this review, we examine the importance of brachytherapy, contemporary recommendations, and avenues for growth.
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Soliman SI, Faraji F, Pang J, Mell LK, Califano JA, Orosco RK. Adjuvant Radiotherapy in Surgically Treated HPV-Positive Oropharyngeal Carcinoma with Adverse Pathological Features. Cancers (Basel) 2022; 14:cancers14184515. [PMID: 36139676 PMCID: PMC9496867 DOI: 10.3390/cancers14184515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Purpose: HPV-positive oropharyngeal carcinoma (HPV-OPC) is increasingly treated with primary surgery. The National Comprehensive Cancer Network (NCCN) recommends adjuvant therapy for surgically treated HPV-OPC displaying adverse pathological features (AF). We evaluated adjuvant radiotherapy patterns and outcomes in surgically treated AF-positive HPV-OPC (AF-HPV-OPC). Methods: The National Cancer Database was interrogated for patients ≥ 18 years with early-stage HPV-OPC from 2010 to 2017 who underwent definitive resection. Patients that had an NCCN-defined AF indication for adjuvant radiotherapy were assessed, including positive surgical margins (PSM), extranodal extension (ENE), lymphovascular invasion, and level 4/5 cervical lymph nodes. Overall survival (OS) was evaluated using Cox proportional hazards models and Kaplan−Meier analysis in whole and propensity score matched (PM) cohorts. Results: Of 15,036 patients meeting inclusion criteria, 55.7% were positive for at least one AF. Presence of any AF was associated with worse OS (hazard ratio (HR) = 1.56, p < 0.001). In isolation, each AF was associated with worse OS. On PM analysis, insurance status, T2 category, Charlson-Deyo comorbidity score, ENE (HR = 1.81, p < 0.001), and PSM (HR = 1.58, p = 0.002) were associated with worse OS. Median 3-year OS was 92.0% among AF-HPV-OPC patients undergoing adjuvant radiotherapy and 84.2% for those who did not receive adjuvant radiotherapy (p < 0.001, n = 1678). The overall rate of patients with AF-HPV-OPC who did not receive adjuvant radiotherapy was 13% and increased from 10% in 2010 to 17% in 2017 (ptrend = 0.007). Conclusions: In patients with AF-HPV-OPC, adjuvant radiotherapy is associated with improved survival. In the era of de-escalation therapy for HPV-OPC, our findings demonstrate the persistent prognostic benefit of post-operative radiotherapy in the setting of commonly identified adverse features. Ongoing clinical trials will better elucidate optimized patient selection for de-escalated therapy.
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Affiliation(s)
- Shady I. Soliman
- School of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Farhoud Faraji
- Department of Otolaryngology-Head & Neck Surgery, University of California San Diego, La Jolla, CA 92037, USA
- Correspondence: (F.F.); (R.K.O.)
| | - John Pang
- Department of Otolaryngology-Head & Neck Surgery, Louisiana State University, Shreveport, LA 71103, USA
| | - Loren K. Mell
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA 92037, USA
- Moores Cancer Center, La Jolla, CA 92037, USA
| | - Joseph A. Califano
- Department of Otolaryngology-Head & Neck Surgery, University of California San Diego, La Jolla, CA 92037, USA
- Moores Cancer Center, La Jolla, CA 92037, USA
| | - Ryan K. Orosco
- Department of Otolaryngology-Head & Neck Surgery, University of California San Diego, La Jolla, CA 92037, USA
- Moores Cancer Center, La Jolla, CA 92037, USA
- Correspondence: (F.F.); (R.K.O.)
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Tasci E, Zhuge Y, Camphausen K, Krauze AV. Bias and Class Imbalance in Oncologic Data-Towards Inclusive and Transferrable AI in Large Scale Oncology Data Sets. Cancers (Basel) 2022; 14:2897. [PMID: 35740563 PMCID: PMC9221277 DOI: 10.3390/cancers14122897] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 02/06/2023] Open
Abstract
Recent technological developments have led to an increase in the size and types of data in the medical field derived from multiple platforms such as proteomic, genomic, imaging, and clinical data. Many machine learning models have been developed to support precision/personalized medicine initiatives such as computer-aided detection, diagnosis, prognosis, and treatment planning by using large-scale medical data. Bias and class imbalance represent two of the most pressing challenges for machine learning-based problems, particularly in medical (e.g., oncologic) data sets, due to the limitations in patient numbers, cost, privacy, and security of data sharing, and the complexity of generated data. Depending on the data set and the research question, the methods applied to address class imbalance problems can provide more effective, successful, and meaningful results. This review discusses the essential strategies for addressing and mitigating the class imbalance problems for different medical data types in the oncologic domain.
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Affiliation(s)
- Erdal Tasci
- Center for Cancer Research, National Cancer Institute, NIH, Building 10, Bethesda, MD 20892, USA; (E.T.); (Y.Z.); (K.C.)
- Department of Computer Engineering, Ege University, Izmir 35100, Turkey
| | - Ying Zhuge
- Center for Cancer Research, National Cancer Institute, NIH, Building 10, Bethesda, MD 20892, USA; (E.T.); (Y.Z.); (K.C.)
| | - Kevin Camphausen
- Center for Cancer Research, National Cancer Institute, NIH, Building 10, Bethesda, MD 20892, USA; (E.T.); (Y.Z.); (K.C.)
| | - Andra V. Krauze
- Center for Cancer Research, National Cancer Institute, NIH, Building 10, Bethesda, MD 20892, USA; (E.T.); (Y.Z.); (K.C.)
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