PMID- 31576546 OWN - NLM STAT- MEDLINE DCOM- 20191004 LR - 20230513 IS - 0065-2598 (Print) IS - 0065-2598 (Linking) VI - 1164 DP - 2019 TI - Discovery of Metabolic Biomarkers Predicting Radiation Therapy Late Effects in Prostate Cancer Patients. PG - 141-150 LID - 10.1007/978-3-030-22254-3_11 [doi] AB - Patients presenting with prostate cancers undergo clinical staging evaluations to determine the extent of disease to guide therapeutic recommendations. Management options may include watchful waiting, surgery, or radiation therapy. Thus, initial risk stratification of prostate cancer patients is important for achieving optimal therapeutic results or cancer cure and preservation of quality of life. Predictive biomarkers for risks of complications or late effects of treatment are needed to inform clinical decisions for treatment selection. Here, we analyzed pre-treatment plasma metabolites in a cohort of prostate cancer patients (N = 99) treated with Stereotactic Body Radiation Therapy (SBRT) at Medstar-Georgetown University Hospital in a longitudinal, quality-of-life study to determine if individuals experiencing radiation toxicities can be identified by a molecular profile in plasma prior to treatment. We used a multiple reaction mass spectrometry-based molecular phenotyping of clinically annotated plasma samples in a retrospective outcome analysis to identify candidate biomarker panels correlating with adverse clinical outcomes following radiation therapy. We describe the discovery of candidate biomarkers, based on small molecule metabolite panels, showing high correlations (AUCs >/= 95%) with radiation toxicities, suitable for validation studies in an expanded cohort of patients. FAU - Cheema, Amrita K AU - Cheema AK AD - Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. AD - Department of Biochemistry, Molecular and Cellular Biology, Georgetown University Medical Center, Washington, DC, USA. FAU - Grindrod, Scott AU - Grindrod S AD - Shuttle Pharmaceuticals Inc, Rockville, MD, USA. FAU - Zhong, Xiaogang AU - Zhong X AD - Department of Biostatistics and Biomathematics, Georgetown University Medical Center, Washington, DC, USA. FAU - Jain, Shreyans AU - Jain S AD - Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. FAU - Menon, Smrithi S AU - Menon SS AD - Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. FAU - Mehta, Khyati Y AU - Mehta KY AD - Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. FAU - Suy, Simeng AU - Suy S AD - Department of Radiation Medicine, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Collins, Sean AU - Collins S AD - Department of Radiation Medicine, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Wang, Yiwen AU - Wang Y AD - Department of Biostatistics and Biomathematics, Georgetown University Medical Center, Washington, DC, USA. FAU - Timofeeva, Olga AU - Timofeeva O AD - Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. FAU - Bandi, Gaurav AU - Bandi G AD - Department of Urology, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Pahira, John AU - Pahira J AD - Department of Urology, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Kowalczyk, Keith AU - Kowalczyk K AD - Department of Urology, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Lynch, John AU - Lynch J AD - Department of Urology, Medstar-Georgetown University Hospital, Washington, DC, USA. FAU - Dritschilo, Anatoly AU - Dritschilo A AD - Shuttle Pharmaceuticals Inc, Rockville, MD, USA. dritscha@georgetown.edu. AD - Department of Radiation Medicine, Medstar-Georgetown University Hospital, Washington, DC, USA. dritscha@georgetown.edu. LA - eng GR - P30 CA051008/CA/NCI NIH HHS/United States PT - Journal Article PL - United States TA - Adv Exp Med Biol JT - Advances in experimental medicine and biology JID - 0121103 RN - 0 (Biomarkers) SB - IM MH - *Biomarkers/blood MH - Humans MH - Longitudinal Studies MH - Male MH - *Prostatic Neoplasms/radiotherapy MH - Quality of Life MH - *Radiation Injuries/blood MH - *Radiosurgery/adverse effects MH - Retrospective Studies OTO - NOTNLM OT - Metabolomics OT - Prognostic biomarkers OT - Prostate cancer OT - SBRT EDAT- 2019/10/03 06:00 MHDA- 2019/10/08 06:00 CRDT- 2019/10/03 06:00 PHST- 2019/10/03 06:00 [entrez] PHST- 2019/10/03 06:00 [pubmed] PHST- 2019/10/08 06:00 [medline] AID - 10.1007/978-3-030-22254-3_11 [doi] PST - ppublish SO - Adv Exp Med Biol. 2019;1164:141-150. doi: 10.1007/978-3-030-22254-3_11.