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Kau NS, Kelly JC, Kim H, Smith R, Fraum TJ, Byrnes K, Trikalinos NA, Aranha O, Li KZ, Liu SA, Suresh R. Treatment of metastatic rectal squamous cell carcinoma in a pregnant patient. BMJ Case Rep 2024; 17:e257984. [PMID: 38378585 PMCID: PMC10882350 DOI: 10.1136/bcr-2023-257984] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024] Open
Abstract
Rectal squamous cell carcinoma is an exceedingly rare form of rectal cancer, with limited data available regarding its presentation and effective treatment. Rectal cancer occurring during pregnancy is uncommon as well. This is a case of metastatic rectal squamous cell carcinoma presenting in a 22-week pregnant, female patient in her early 30s. The patient was treated with 5-fluorouracil and cisplatin and delivered a healthy male child born via uncomplicated vaginal delivery at 35 weeks. This article demonstrates that despite the rare nature of this cancer, in the already rare context of pregnancy, effective and safe treatment is possible with a multidisciplinary team.
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Affiliation(s)
- Nathan S Kau
- Department of Medicine, Division of Medical Oncology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Jeannie C Kelly
- Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, Missouri, USA
| | - Hyun Kim
- Department of Radiation Oncology, Washington University in St Louis School of Medicine, St Louis, Missouri, USA
| | - Radhika Smith
- Department of Surgery, Division of Colon and Rectal Surgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Tyler J Fraum
- Department of Radiology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Kathleen Byrnes
- Department of Pathology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Nikolaos A Trikalinos
- Department of Medicine, Division of Medical Oncology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Olivia Aranha
- Department of Medicine, Division of Medical Oncology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Kevin Z Li
- Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Shiyuan Anabeth Liu
- Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Rama Suresh
- Department of Medicine, Division of Medical Oncology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
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Chen B, Alvarado DM, Iticovici M, Kau NS, Park H, Parikh PJ, Thotala D, Ciorba MA. Interferon-Induced IDO1 Mediates Radiation Resistance and Is a Therapeutic Target in Colorectal Cancer. Cancer Immunol Res 2020; 8:451-464. [PMID: 32127391 PMCID: PMC7123802 DOI: 10.1158/2326-6066.cir-19-0282] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 11/08/2019] [Accepted: 02/20/2020] [Indexed: 12/13/2022]
Abstract
Colorectal cancer is a major cause of mortality worldwide. Chemotherapy and radiation remain standard treatment for locally advanced disease, with current immune-targeting therapies applying to only a small subset of patients. Expression of the immuno-oncology target indoleamine 2,3 dioxygenase 1 (IDO1) is associated with poor colorectal cancer clinical outcomes but is understudied as a potential treatment target. In this study, we examined the interaction between the IDO1 pathway and radiotherapy in colorectal cancer. We used human and mouse colorectal cancer cell lines, organoids, mouse syngeneic colorectal cancer tumor graft models, and colorectal cancer tissues from patients who received radiotherapy. IDO1 activity was blocked using the clinical IDO1 inhibitor epacadostat and by genetic disruption. We found that radiation induced IDO1 overexpression in colorectal cancer through type I and II IFN signaling. IDO1 enzymatic activity directly influenced colorectal cancer radiation sensitivity. IDO1 inhibition sensitized colorectal cancer to radiation-induced cell death, whereas the IDO1 metabolite kynurenine promoted radioprotection. IDO1 inhibition also potentiated Th1 cytokines and myeloid cell-modulating factors in the tumor microenvironment and promoted an abscopal effect on tumors outside the radiation field. Conversely, IDO1 blockade protected the normal small intestinal epithelium from radiation toxicity and accelerated recovery from radiation-induced weight loss, indicating a role in limiting side effects. These data demonstrated that IDO1 inhibition potentiates radiotherapy effectiveness in colorectal cancer. The findings also provide rationale and mechanistic insight for the study of IDO1 inhibitors as adjuvant therapy to radiation in patients with locally advanced sporadic and colitis-associated colorectal cancer.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Cell Line, Tumor
- Colorectal Neoplasms/enzymology
- Colorectal Neoplasms/immunology
- Colorectal Neoplasms/pathology
- Colorectal Neoplasms/radiotherapy
- Female
- Gene Expression Regulation, Enzymologic/drug effects
- Humans
- Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism
- Interferons/pharmacology
- Intestinal Mucosa/radiation effects
- Kynurenine/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Oximes/pharmacology
- Radiation Tolerance/drug effects
- Radiation-Protective Agents/pharmacology
- Sulfonamides/pharmacology
- Tumor Microenvironment
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Affiliation(s)
- Baosheng Chen
- Inflammatory Bowel Diseases Center and the Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri.
| | - David M Alvarado
- Inflammatory Bowel Diseases Center and the Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Micah Iticovici
- Inflammatory Bowel Diseases Center and the Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Nathan S Kau
- Inflammatory Bowel Diseases Center and the Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Haeseong Park
- Division of Medical Oncology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Parag J Parikh
- Department of Radiation Oncology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Dinesh Thotala
- Department of Radiation Oncology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri
| | - Matthew A Ciorba
- Inflammatory Bowel Diseases Center and the Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, Missouri.
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