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Sitler CA, Tian C, Hamilton CA, Richardson MT, Chan JK, Kapp DS, Leath CA, Casablanca Y, Washington C, Chappell NP, Klopp AH, Shriver CD, Tarney CM, Bateman NW, Conrads TP, Maxwell GL, Phippen NT, Darcy KM. Immuno-Molecular Targeted Therapy Use and Survival Benefit in Patients with Stage IVB Cervical Carcinoma in Commission on Cancer ®-Accredited Facilities in the United States. Cancers (Basel) 2024; 16:1071. [PMID: 38473428 DOI: 10.3390/cancers16051071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024] Open
Abstract
PURPOSE To investigate IMT use and survival in real-world stage IVB cervical cancer patients outside randomized clinical trials. METHODS Patients diagnosed with stage IVB cervical cancer during 2013-2019 in the National Cancer Database and treated with chemotherapy (CT) ± external beam radiation (EBRT) ± intracavitary brachytherapy (ICBT) ± IMT were studied. The adjusted hazard ratio (AHR) and 95% confidence interval (CI) for risk of death were estimated in patients treated with vs. without IMT after applying propensity score analysis to balance the clinical covariates. RESULTS There were 3164 evaluable patients, including 969 (31%) who were treated with IMT. The use of IMT increased from 11% in 2013 to 46% in 2019. Age, insurance, facility type, sites of distant metastasis, and type of first-line treatment were independently associated with using IMT. In propensity-score-balanced patients, the median survival was 18.6 vs. 13.1 months for with vs. without IMT (p < 0.001). The AHR was 0.72 (95% CI = 0.64-0.80) for adding IMT overall, 0.72 for IMT + CT, 0.66 for IMT + CT + EBRT, and 0.69 for IMT + CT + EBRT + ICBT. IMT-associated survival improvements were suggested in all subgroups by age, race/ethnicity, comorbidity score, facility type, tumor grade, tumor size, and site of metastasis. CONCLUSIONS IMT was associated with a consistent survival benefit in real-world patients with stage IVB cervical cancer.
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Affiliation(s)
- Collin A Sitler
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
| | - Chunqiao Tian
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20817, USA
| | - Chad A Hamilton
- Gynecologic Oncology Section, Women's Services and The Ochsner Cancer Institute, Ochsner Health, New Orleans, LA 70115, USA
| | - Michael T Richardson
- Department of Obstetrics and Gynecology, Los Angeles School of Medicine, University of California, Los Angeles, CA 90024, USA
| | - John K Chan
- Palo Alto Medical Foundation, California Pacific Medical Center, Sutter Health, San Francisco, CA 94010, USA
| | - Daniel S Kapp
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Charles A Leath
- Division of Gynecologic Oncology, University of Alabama at Birmingham, O'Neal Comprehensive Cancer Center, Birmingham, AL 35249, USA
| | - Yovanni Casablanca
- Gynecologic Oncology Division, Levine Cancer Institute, Atrium Health, Charlotte, NC 28204, USA
| | - Christina Washington
- Gynecologic Oncology Division, Stephenson Cancer Center, Oklahoma University Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Nicole P Chappell
- Gynecologic Oncology Division, GW Medical Faculty Associates, George Washington University, Washington, DC 20037, USA
| | - Ann H Klopp
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Craig D Shriver
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
| | - Christopher M Tarney
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
| | - Nicholas W Bateman
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20817, USA
| | - Thomas P Conrads
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Women's Health Integrated Research Center, Women's Service Line, Inova Health System, Falls Church, VA 22042, USA
| | - George Larry Maxwell
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Women's Health Integrated Research Center, Women's Service Line, Inova Health System, Falls Church, VA 22042, USA
| | - Neil T Phippen
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
| | - Kathleen M Darcy
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20817, USA
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Watson ML, Hickman SHM, Dreesbeimdiek KM, Kohler K, Stubbs DJ. Directed acyclic graphs in perioperative observational research-A systematic review and critique against best practice recommendations. PLoS One 2023; 18:e0281259. [PMID: 36758007 PMCID: PMC9910726 DOI: 10.1371/journal.pone.0281259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
The Directed Acyclic Graph (DAG) is a graph representing causal pathways for informing the conduct of an observational study. The use of DAGs allows transparent communication of a causal model between researchers and can prevent over-adjustment biases when conducting causal inference, permitting greater confidence and transparency in reported causal estimates. In the era of 'big data' and increasing number of observational studies, the role of the DAG is becoming more important. Recent best-practice guidance for constructing a DAG with reference to the literature has been published in the 'Evidence synthesis for constructing DAGs' (ESC-DAG) protocol. We aimed to assess adherence to these principles for DAGs constructed within perioperative literature. Following registration on the International Prospective Register of Systematic Reviews (PROSPERO) and with adherence to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting framework for systematic reviews, we searched the Excerpta Medica dataBASE (Embase), the Medical Literature Analysis and Retrieval System Online (MEDLINE) and Cochrane databases for perioperative observational research incorporating a DAG. Nineteen studies were included in the final synthesis. No studies demonstrated any evidence of following the mapping stage of the protocol. Fifteen (79%) fulfilled over half of the translation and integration one stages of the protocol. Adherence with one stage did not guarantee fulfilment of the other. Two studies (11%) undertook the integration two stage. Unmeasured variables were handled inconsistently between studies. Only three (16%) studies included unmeasured variables within their DAG and acknowledged their implication within the main text. Overall, DAGs that were constructed for use in perioperative observational literature did not consistently adhere to best practice, potentially limiting the benefits of subsequent causal inference. Further work should focus on exploring reasons for this deviation and increasing methodological transparency around DAG construction.
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Affiliation(s)
- Matthew Lamont Watson
- Clinical School of Medicine, University of Cambridge School of Clinical Medicine, Addenbrooke’s Hospital, Cambridge, United Kingdom
| | - Sebastian H. M. Hickman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
- The Alan Turing Institute, London, United Kingdom
| | - Kaya Marlen Dreesbeimdiek
- Department of Engineering, Health Systems Design Group, University of Cambridge, Cambridge, United Kingdom
| | - Katharina Kohler
- University Division of Anaesthesia, University of Cambridge, Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
| | - Daniel J. Stubbs
- Department of Engineering, Health Systems Design Group, University of Cambridge, Cambridge, United Kingdom
- Wellcome Trust Research Fellow, University Division of Anaesthesia, Addenbrooke’s Hospital, Cambridge, United Kingdom
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