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1.
Adv Radiat Oncol ; 8(5): 101253, 2023.
Article in English | MEDLINE | ID: mdl-37250284

ABSTRACT

Purpose: The health care sector is a major contributor of worldwide greenhouse gas (GHG) emissions. Indirect emissions, including those associated with transportation, make up 82% of the US health care sector's environmental footprint. Radiation therapy (RT) treatment regimens present an opportunity for environmental health care-based stewardship owing to the high incidence of cancer diagnosis, significant utilization of RT, and myriad treatment days required for curative regimens. Because the use of short-course RT (SCRT) in the treatment of rectal cancer has demonstrated noninferior clinical outcomes compared with conventional, long-course RT (LCRT), we investigate the environmental and health equity-related outcomes. Methods and Materials: Patients treated with curative, preoperative RT for newly diagnosed rectal cancer at our institution between 2004 and 2022 and living in-state were included. Travel distance was estimated using patients' reported home address. Associated GHG emissions were calculated and reported in carbon dioxide equivalents (CO2e). Results: Of 334 patients included, the total distance traveled for the treatment course was significantly greater in patients treated with LCRT versus SCRT (median, 1417 vs 319 miles; P < .001). Total CO2e emissions for those undergoing LCRT (n = 261) and SCRT (n = 73) were 665.3 kg CO2e and 149.9 kg CO2e, respectively, per treatment course (P < .001), with a net difference of 515.4 kg CO2e. Relatively, this suggests that LCRT is associated with 4.5 times greater GHG emissions from patient transportation. Conclusions: Using treatment of rectal cancer as proof-of-principle, we advocate for the inclusion of environmental considerations in the creation of climate-resilient oncologic RT practices, especially in the context of equivocal clinical outcomes between RT fractionation schedules.

2.
Pract Radiat Oncol ; 13(1): 41-65, 2023.
Article in English | MEDLINE | ID: mdl-36280107

ABSTRACT

PURPOSE: With the results of several recently published clinical trials, this guideline informs on the use of adjuvant radiation therapy (RT) and systemic therapy in the treatment of endometrial cancer. Updated evidence-based recommendations provide indications for adjuvant RT and the associated techniques, the utilization and sequencing of adjuvant systemic therapies, and the effect of surgical staging techniques and molecular tumor profiling. METHODS: The American Society for Radiation Oncology convened a multidisciplinary task force to address 6 key questions that focused on the adjuvant management of patients with endometrial cancer. The key questions emphasized the (1) indications for adjuvant RT, (2) RT techniques, target volumes, dose fractionation, and treatment planning aims, (3) indications for systemic therapy, (4) sequencing of systemic therapy with RT, (5) effect of lymph node assessment on utilization of adjuvant therapy, and (6) effect of molecular tumor profiling on utilization of adjuvant therapy. Recommendations were based on a systematic literature review and created using a predefined consensus-building methodology and system for quality of evidence grading and strength of recommendation. RESULTS: The task force recommends RT (either vaginal brachytherapy or external beam RT) be given based on the patient's clinical-pathologic risk factors to reduce risk of vaginal and/or pelvic recurrence. When external beam RT is delivered, intensity modulated RT with daily image guided RT is recommended to reduce acute and late toxicity. Chemotherapy is recommended for patients with International Federation of Gynecology and Obstetrics (FIGO) stage I to II with high-risk histologies and those with FIGO stage III to IVA with any histology. When sequencing chemotherapy and RT, there is no prospective data to support an optimal sequence. Sentinel lymph node mapping is recommended over pelvic lymphadenectomy for surgical nodal staging. Data on sentinel lymph node pathologic ultrastaging status supports that patients with isolated tumor cells be treated as node negative and adjuvant therapy based on uterine risk factors and patients with micrometastases be treated as node positive. The available data on molecular characterization of endometrial cancer are compelling and should be increasingly considered when making recommendations for adjuvant therapy. CONCLUSIONS: These recommendations guide evidence-based best clinical practices on the use of adjuvant therapy for endometrial cancer.


Subject(s)
Brachytherapy , Endometrial Neoplasms , Radiation Oncology , Radiotherapy, Intensity-Modulated , Female , Humans , United States , Endometrial Neoplasms/pathology , Brachytherapy/methods , Combined Modality Therapy , Neoplasm Staging , Radiotherapy, Adjuvant/methods
4.
Int J Radiat Oncol Biol Phys ; 110(5): 1451-1465, 2021 08 01.
Article in English | MEDLINE | ID: mdl-33662459

ABSTRACT

PURPOSE: The main objective of the present study was to integrate 18F-FDG-PET/CT radiomics with multiblock discriminant analysis for predicting circulating tumor cells (CTCs) in early-stage non-small cell lung cancer (ES-NSCLC) treated with stereotactic body radiation therapy (SBRT). METHODS: Fifty-six patients with stage I NSCLC treated with SBRT underwent 18F-FDG-PET/CT imaging pre-SBRT and post-SBRT (median, 5 months; range, 3-10 months). CTCs were assessed via a telomerase-based assay before and within 3 months after SBRT and dichotomized at 5 and 1.3 CTCs/mL. Pre-SBRT, post-SBRT, and delta PET/CT radiomics features (n = 1548 × 3/1562 × 3) were extracted from gross tumor volume. Seven feature blocks were constructed including clinical parameters (n = 12). Multiblock data integration was performed using block sparse partial least squares-discriminant analysis (sPLS-DA) referred to as Data Integration Analysis for Biomarker Discovery Using Latent Components (DIABLO) for identifying key signatures by maximizing common information between different feature blocks while discriminating CTC levels. Optimal input blocks were identified using a pairwise combination method. DIABLO performance for predicting pre-SBRT and post-SBRT CTCs was evaluated using combined AUC (area under the curve, averaged across different blocks) analysis with 20 × 5-fold cross-validation (CV) and compared with that of concatenation-based sPLS-DA that consisted of combining all features into 1 block. CV prediction scores between 1 class versus the other were compared using the Wilcoxon rank sum test. RESULTS: For predicting pre-SBRT CTCs, DIABLO achieved the best performance with combined pre-SBRT PET radiomics and clinical feature blocks, showing CV AUC of 0.875 (P = .009). For predicting post-SBRT CTCs, DIABLO achieved the best performance with combined post-SBRT CT and delta CT radiomics feature blocks, showing CV AUCs of 0.883 (P = .001). In contrast, all single-block sPLS-DA models could not attain CV AUCs higher than 0.7. CONCLUSIONS: Multiblock integration with discriminant analysis of 18F-FDG-PET/CT radiomics has the potential for predicting pre-SBRT and post-SBRT CTCs. Radiomics and CTC analysis may complement and together help guide the subsequent management of patients with ES-NSCLC.


Subject(s)
Carcinoma, Non-Small-Cell Lung/blood , Carcinoma, Non-Small-Cell Lung/radiotherapy , Lung Neoplasms/blood , Lung Neoplasms/radiotherapy , Neoplastic Cells, Circulating , Positron Emission Tomography Computed Tomography , Aged , Aged, 80 and over , Area Under Curve , Biomarkers, Tumor , Carcinoma, Non-Small-Cell Lung/pathology , Discriminant Analysis , Female , Fluorodeoxyglucose F18 , Humans , Lung Neoplasms/pathology , Male , Middle Aged , Prospective Studies , Radiopharmaceuticals , Statistics, Nonparametric , Tumor Burden
5.
Clin Cancer Res ; 26(10): 2372-2380, 2020 05 15.
Article in English | MEDLINE | ID: mdl-31969332

ABSTRACT

PURPOSE: Although stereotactic body radiotherapy (SBRT) is effective in early-stage non-small cell lung cancer (NSCLC), approximately 10%-15% of patients will fail regionally and 20%-25% distantly. We evaluate a novel circulating tumor cell (CTC) assay as a prognostic marker for increased risk of recurrence following SBRT. EXPERIMENTAL DESIGN: Ninety-two subjects (median age, 71 years) with T1a (64%), T1b (23%), or T2a (13%) stage I NSCLC treated with SBRT were prospectively enrolled. CTCs were enumerated by utilizing a GFP-expressing adenoviral probe that detects elevated telomerase activity in cancer cells. Samples were obtained before, during, and serially up to 24 months after treatment. SBRT was delivered to a median dose of 50 Gy (range, 40-60 Gy), mostly commonly in four to five fractions (92%). RESULTS: Thirty-eight of 92 subjects (41%) had a positive CTC test prior to SBRT. A cutoff of ≥5 CTCs/mL before treatment defined favorable (n = 78) and unfavorable (n = 14) prognostic groups. Increased risk of nodal (P = 0.04) and distant (P = 0.03) failure was observed in the unfavorable group. Within 3 months following SBRT, CTCs continued to be detected in 10 of 35 (29%) subjects. Persistent detection of CTCs was associated with increased risk of distant failure (P = 0.04) and trended toward increased regional (P = 0.08) and local failure (P = 0.16). CONCLUSIONS: Higher pretreatment CTCs and persistence of CTCs posttreatment is significantly associated with increased risk of recurrence outside the targeted treatment site. This suggests that CTC analysis may potentially identify patients at higher risk for regional or distant recurrences and who may benefit from either systemic therapy and/or timely locoregional salvage treatment.


Subject(s)
Carcinoma, Non-Small-Cell Lung/pathology , Carcinoma, Non-Small-Cell Lung/radiotherapy , Lung Neoplasms/pathology , Lung Neoplasms/radiotherapy , Neoplasm Recurrence, Local/pathology , Neoplastic Cells, Circulating/pathology , Radiosurgery/methods , Aged , Aged, 80 and over , Carcinoma, Non-Small-Cell Lung/blood , Carcinoma, Non-Small-Cell Lung/surgery , Disease Progression , Female , Humans , Lung Neoplasms/blood , Lung Neoplasms/surgery , Male , Neoplasm Recurrence, Local/blood , Neoplasm Recurrence, Local/surgery , Neoplasm Staging , Retrospective Studies , Survival Rate , Telomerase/blood , Treatment Outcome
6.
Clin Lung Cancer ; 20(1): e63-e71, 2019 01.
Article in English | MEDLINE | ID: mdl-30337269

ABSTRACT

BACKGROUND: Stereotactic body radiation therapy (SBRT) is standard for medically inoperable stage I non-small-cell lung cancer (NSCLC) and is emerging as a surgical alternative in operable patients. However, limited long-term outcomes data exist, particularly according to operability. We hypothesized long-term local control (LC) and cancer-specific survival (CSS) would not differ by fractionation schedule, tumor size or location, or operability status, but overall survival (OS) would be higher for operable patients. PATIENTS AND METHODS: All consecutive patients with stage I (cT1-2aN0M0) NSCLC treated with SBRT from June 2009 to July 2013 were assessed. Thoracic surgeon evaluation determined operability. Local failure was defined as growth following initial tumor shrinkage or progression on consecutive scans. LC, CSS, and OS were calculated using Cox proportional hazards regression. RESULTS: A total of 186 patients (204 lesions) were analyzed. Most patients were inoperable (82%) with Eastern Cooperative Oncology Group performance status of 1 (59%) or 2 (26%). All lesions received biological effective doses ≥ 100 Gy most commonly (94%) in 3 to 5 fractions. The median follow-up was 4.0 years. LC at 2 and 5 years were 95.6% (95% confidence interval, 92%-99%) and 93.7% (95% confidence interval, 90%-98%), respectively. Compared with operable patients, inoperable patients did not have significant differences in 5-year LC (93.1% vs. 96.7%; P = .49), nodal failure (31.4% vs. 11.0%; P = .12), distant failure (12.2% vs. 10.4%; P = .98), or CSS (80.6% vs. 91.0%; P = .45) but trended towards worse OS (34.2% vs. 45.3%; P = .068). Tumor size, location, and fractionation did not significantly influence outcomes. CONCLUSIONS: SBRT has excellent, durable LC and CSS rates for early-stage NSCLC, although inoperable patients had somewhat lower OS than operable patients, likely owing to greater comorbidities.


Subject(s)
Carcinoma, Non-Small-Cell Lung/radiotherapy , Lung Neoplasms/radiotherapy , Radiosurgery , Aged , Aged, 80 and over , Carcinoma, Non-Small-Cell Lung/mortality , Carcinoma, Non-Small-Cell Lung/pathology , Dose Fractionation, Radiation , Female , Follow-Up Studies , Humans , Lung Neoplasms/mortality , Lung Neoplasms/pathology , Male , Middle Aged , Neoplasm Staging , Survival Analysis , Treatment Outcome , Tumor Burden
7.
Int J Radiat Oncol Biol Phys ; 102(3): 536-542, 2018 11 01.
Article in English | MEDLINE | ID: mdl-30244877

ABSTRACT

PURPOSE: In patients treated with stereotactic body radiation therapy (SBRT) for presumed early stage non-small cell lung cancer (NSCLC), detection and monitoring of circulating tumor cells (CTCs) may be useful for assessing treatment response safely and noninvasively. No published reports of CTC trends in this patient population exist to date. METHODS AND MATERIALS: Patients with clinically diagnosed stage I NSCLC treated with SBRT were eligible for this institutional review board-approved prospective clinical trial. Peripheral blood samples were assayed for CTCs via a green fluorescent protein-expressing adenoviral probe. CTC positivity was defined as 1.3 green fluorescent protein-positive cells/mL of collected blood. Samples were obtained before (pre-radiation therapy [RT]), during, and after SBRT (post-RT; months 1, 3, 6, 12, 18, and 24). SBRT was delivered in ≤5 fractions (median dose of 50 Gy in 12.5 Gy fractions) to a biological equivalent dose of ≥100 Gy in all cases. RESULTS: Forty-eight consecutive patients (T1a [73%], T1b [21%], and T2a [6%]) were enrolled. Median follow-up was 14.2 months. Twenty patients (42%) had a positive CTC level pre-RT, with a median CTC count of 4.2 CTCs per mL (interquartile range [IQR], 2.2-18.7). Of these 20 patients, 17 had evaluable post-RT CTC evaluations showing reduced CTC counts at 1 month (median, 0.2; IQR, 0.1-0.8) and 3 months (median, 0.6; IQR, 0-1.1). Three of these 17 patients experienced disease progression at a median of 19.9 months; all 3 experienced ≥1 positive post-RT CTC test predating clinical progression by a median of 16 months (range, 2-17 months). In contrast, among patients presenting with CTC-detectable disease and for whom all post-RT CTC tests were negative, none experienced recurrence or progression. CONCLUSIONS: CTC monitoring after SBRT for presumed early stage NSCLC may give lead-time notice of disease recurrence or progression. Conversely, negative CTC counts after treatment may provide reassurance of disease control. CTC analysis is thus potentially useful in enhancing clinical diagnosis and follow-up in this population.


Subject(s)
Carcinoma, Non-Small-Cell Lung/blood , Carcinoma, Non-Small-Cell Lung/radiotherapy , Lung Neoplasms/blood , Lung Neoplasms/radiotherapy , Neoplastic Cells, Circulating , Radiosurgery , Aged , Aged, 80 and over , Disease Progression , Dose Fractionation, Radiation , Female , Fluorescent Dyes/chemistry , Follow-Up Studies , Green Fluorescent Proteins/chemistry , Humans , Male , Middle Aged , Neoplasm Recurrence, Local , Pilot Projects , Prospective Studies , Recurrence , Telomerase/blood
8.
Cancer ; 124(12): 2653-2660, 2018 06 15.
Article in English | MEDLINE | ID: mdl-29669165

ABSTRACT

BACKGROUND: Survivorship care has become an increasingly critical component of oncologic care as well as a quality practice and reimbursement metric. To the authors' knowledge, the current climate of survivorship medicine in radiation oncology has not been investigated fully. METHODS: An institutional review board-approved, Internet-based survey examining practices and preparedness in survivorship care was distributed to radiation oncology practices participating in the American College of Radiology Radiation Oncology Practice Accreditation program between November 2016 and January 2017. A total of 78 surveys were completed. Among these, 2 were nonphysicians, resulting in 76 evaluable responses. RESULTS: Radiation oncologists (ROs) frequently reported that they are the primary provider in the evaluation of late toxicities and the recurrence of primary cancer. Although approximately 68% of ROs frequently discuss plans for future care with survivors, few provide a written survivorship care plan to their patients (18%) or the patients' primary care providers (24%). Patient prognosis, disease site, and reimbursement factors often influence the provision of survivorship care. Although ROs report that several platforms offer training in survivorship medicine, the quality of these resources is variable and extensive instruction is rare. Fewer than one-half of ROs believe they are expertly trained in survivorship care. CONCLUSIONS: ROs play an active role within the multidisciplinary team in the cancer-related follow-up care of survivors. Investigation of barriers to the provision of survivorship care and optimization of service delivery should be pursued further. The development of high-quality, easily accessible educational programming is needed so that ROs can participate more effectively in the care of cancer survivors. Cancer 2018;124:2653-60. © 2018 American Cancer Society.


Subject(s)
Cancer Survivors/education , Neoplasms/radiotherapy , Patient Care Planning/organization & administration , Radiation Oncology/organization & administration , Survivorship , Adult , Aftercare/organization & administration , Aftercare/trends , Female , Humans , Male , Middle Aged , Neoplasms/mortality , Patient Care Planning/trends , Patient Care Team/organization & administration , Patient Education as Topic , Physician-Patient Relations , Practice Patterns, Physicians'/organization & administration , Practice Patterns, Physicians'/trends , Professional Role , Radiation Oncologists/organization & administration , Radiation Oncologists/statistics & numerical data , Radiation Oncology/methods , Radiation Oncology/trends , Surveys and Questionnaires/statistics & numerical data
9.
G3 (Bethesda) ; 8(4): 1379-1390, 2018 03 28.
Article in English | MEDLINE | ID: mdl-29487187

ABSTRACT

Protein folding and degradation are both required for protein quality control, an essential cellular activity that underlies normal growth and development. We investigated how BOB1, an Arabidopsis thaliana small heat shock protein, maintains normal plant development. bob1 mutants exhibit organ polarity defects and have expanded domains of KNOX gene expression. Some of these phenotypes are ecotype specific suggesting that other genes function to modify them. Using a genetic approach we identified an interaction between BOB1 and FIL, a gene required for abaxial organ identity. We also performed an EMS enhancer screen using the bob1-3 allele to identify pathways that are sensitized by a loss of BOB1 function. This screen identified genetic, but not physical, interactions between BOB1 and the proteasome subunit RPT2a Two other proteasome subunits, RPN1a and RPN8a, also interact genetically with BOB1 Both BOB1 and the BOB1-interacting proteasome subunits had previously been shown to interact genetically with the transcriptional enhancers AS1 and AS2, genes known to regulate both organ polarity and KNOX gene expression. Our results suggest a model in which BOB1 mediated protein folding and proteasome mediated protein degradation form a functional proteostasis module required for ensuring normal plant development.


Subject(s)
Arabidopsis Proteins/metabolism , Arabidopsis/genetics , Epistasis, Genetic , Heat-Shock Proteins/metabolism , Proteasome Endopeptidase Complex/metabolism , Protein Subunits/metabolism , Proteostasis/genetics , Alleles , Amino Acid Sequence , Arabidopsis/drug effects , Arabidopsis/growth & development , Arabidopsis/ultrastructure , Arabidopsis Proteins/chemistry , Ecotype , Epistasis, Genetic/drug effects , Heat-Shock Proteins/chemistry , Hypocotyl/drug effects , Hypocotyl/growth & development , Inflorescence/drug effects , Inflorescence/ultrastructure , Leupeptins/pharmacology , Mutation/genetics , Phenotype , Plant Development/drug effects , Proteostasis/drug effects
10.
Lung Cancer ; 117: 53-59, 2018 03.
Article in English | MEDLINE | ID: mdl-28800837

ABSTRACT

BACKGROUND: The benefit of invasive mediastinal nodal staging (IMNS) in addition to positron emission tomography-computed tomography (PET/CT) is undefined for early stage non-small cell lung cancer (NSCLC). This multi-institutional investigation aimed to evaluate outcomes and patterns of failure in patients staged with PET/CT with or without additional IMNS. METHODS: Two academic centers assessed all consecutive patients staged with PET/CT for early-stage, primary lung NSCLC (cT1-2aN0M0) treated with SBRT. Local recurrence-free survival (LRFS), nodal recurrence-free survival (NRFS), distant metastasis-free survival (DMFS), and overall survival (OS) were calculated using Kaplan-Meier methodology. Univariate and multivariate Cox proportional hazards modeling addressed factors associated with outcomes. RESULTS: Overall, 180 patients (199 lesions) were staged with PET/CT alone and 56 patients (58 lesions) underwent additional IMNS. Among patients receiving IMNS, 52 (93%) underwent EBUS and 4 (7%) underwent mediastinoscopy. At a median follow-up of 33.5 months (range, 1.9-80.9 months), there was no significant difference in LRFS (37 vs. 47 months, p=0.309), NRFS (34 vs. 42 months p=0.370), DMFS (36 vs. 47 months, p=0.234) or OS (37 vs. 47 months, p=0.236) between patients undergoing PET/CT-only versus PET/CT+IMNS staging, respectively. Receipt of IMNS did not correlate with any outcome on either univariate or multivariate analysis (p>0.05). Patterns of failure in both groups were similar, including crude isolated nodal failure rates (8% PET/CT-only versus 14% PET+IMNS group, p=0.202). CONCLUSIONS: Patients undergoing IMNS had similar survival and patterns of recurrence as those receiving PET/CT alone. Further study, ideally prospectively, is needed to determine which subgroups might benefit from IMNS.


Subject(s)
Carcinoma, Non-Small-Cell Lung/diagnosis , Lung Neoplasms/diagnosis , Lung/diagnostic imaging , Lymph Nodes/pathology , Mediastinum/pathology , Positron Emission Tomography Computed Tomography/methods , Aged , Aged, 80 and over , Carcinoma, Non-Small-Cell Lung/mortality , Carcinoma, Non-Small-Cell Lung/radiotherapy , Early Diagnosis , Female , Follow-Up Studies , Humans , Lung Neoplasms/mortality , Lung Neoplasms/radiotherapy , Lymph Nodes/surgery , Male , Mediastinum/surgery , Middle Aged , Neoplasm Staging , Radiosurgery , Survival Analysis , Treatment Outcome
11.
JCO Clin Cancer Inform ; 2: 1-10, 2018 12.
Article in English | MEDLINE | ID: mdl-30652594

ABSTRACT

PURPOSE: Multimodal treatment of Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL) yields excellent outcomes; however, survivors are at risk of developing myriad late and long-term effects. METHODS: From a convenience sample of 964 survivors of HL (37%) and NHL (63%) using a publicly available Internet-based survivorship care plan (SCP) tool between 2011 and 2016, we examined patient-reported cancer care, toxicities, and survivorship care data. RESULTS: Of all survivors, 67% were female and 84% were white and 88% were free of cancer. Median age of diagnosis was 28 years for survivors of HL and 49 years for NHL. Many survivors reported treatment with chemotherapy (92%), surgery (52%), and/or radiation (41%), with most radiation delivered to chest/mantle fields (81%). Survivors reported a diversity of radiation- and chemotherapy-related sequelae, including thyroid dysfunction, speaking and/or swallowing changes, pulmonary fibrosis/pneumonitis, heart disease, chronic fatigue, neurocognitive decline, neuropathy, sexual changes, and secondary breast cancers. Few reported receipt of previous survivorship information. Most reported management/comanagement by an oncology specialist after active treatment; however, a shift to management by primary care provider alone was observed as a trend over time in follow-up. Sixty-six percent of users who responded to a follow-up survey reported that they intend to share the SCP with their health care team. CONCLUSION: Survivors of lymphoma, many of whom are free of disease, report a substantial burden of late and long-term adverse effects, suboptimal delivery of survivorship information, and transitions of care in follow-up in which fragmented systems and/or poor communication may contribute to unmet survivor needs. Multiple opportunities thus exist for which SCPs may be used to improve awareness regarding survivorship and associated adverse effects in addition to communicating follow-up care plans between survivors and treatment teams.


Subject(s)
Combined Modality Therapy/adverse effects , Hodgkin Disease/therapy , Lymphoma, Non-Hodgkin/therapy , Patient Reported Outcome Measures , Adult , Aged , Aged, 80 and over , Cancer Survivors/statistics & numerical data , Drug Therapy/statistics & numerical data , Female , Humans , Male , Middle Aged , Radiotherapy/adverse effects , Radiotherapy/statistics & numerical data , Surgical Procedures, Operative/adverse effects , Surgical Procedures, Operative/statistics & numerical data , Young Adult
12.
Cureus ; 9(10): e1799, 2017 10 24.
Article in English | MEDLINE | ID: mdl-29282443

ABSTRACT

Limited therapeutic options exist for inoperable bilateral kidney tumors. We report the first ever use of proton therapy to treat primary renal cell carcinoma (RCC) and the first report of proton stereotactic body radiation therapy (SBRT) for RCC in an inoperable patient with synchronous RCCs treated with proton SBRT. The patient is a 47-year-old 450-pound female with multiple medical comorbidities, including Stage 3 chronic kidney disease (CKD), who was found to have bilateral renal masses during work-up for cellulitis and sepsis. Following resolution of her sepsis, subsequent cross-sectional imaging demonstrated interval growth of the left renal mass to 4.4 x 4.8 cm and the right renal mass to 2.0 x 2.6 cm. Bilateral biopsies were performed, with pathology revealing Furhman Grade 1-2 clear cell RCC on both sides. A customized SBRT plan delivered a total dose of 3,000 cGy in five fractions to the bilateral kidneys every other day using proton beam therapy. The patient experienced no grade > 1 acute adverse toxicities from proton therapy, and now at one year after treatment, she has had no clinical symptoms of late radiation-induced toxicities. Although a marginal decline in post-treatment glomerular filtration rate (GFR) was observed (baseline 34 mL/min/1.73m2, one-year post-SBRT 29 mL/min/1.73m2), the patient remains asymptomatic and without a requirement for intervention. In presenting a case in which proton SBRT was performed safely and effectively for a medically complex patient with inoperable synchronous bilateral RCC, we suggest that proton therapy is a promising therapeutic approach for even unilateral primary RCC where preservation of renal function is of importance and should be considered for medically inoperable patients. Further experience is needed to determine the optimal dose and fractionation regimen for renal SBRT with proton therapy.

13.
J Gastrointest Oncol ; 8(5): 890-896, 2017 Oct.
Article in English | MEDLINE | ID: mdl-29184694

ABSTRACT

Pancreatic cancer survivors face a unique set of challenges in survivorship, yet structured survivorship care planning is lacking in practice. Survivorship care plans (SCPs) are an essential part of quality cancer care and can facilitate the transition following active treatment; the use of SCPs in pancreatic cancer survivors, however, has not been explored. With a convenience sample of 117 pancreatic cancer survivors and proxies who used an Internet-based SCP tool, we examined treatment details, patient-reported outcomes, and survivorship practices. Thirty-one percent of survivors were 2 years or greater from diagnosis with a median current age of 62 years. Most patients had received multimodality therapy (67%): 68%, 86%, and 43% reported surgical intervention, intravenous chemotherapy, and radiation therapy for their pancreatic cancer, respectively. Survivors commonly reported fatigue, cognitive change, neuropathy, pancreatic insufficiency, and chronic radiation dermatitis related to treatment. Most survivors are managed (47%) or co-managed (35%) by an oncology specialist; however, this percentage decreases over time with consequent increase in management by primary care providers alone. Only 5% had previously been offered an SCP. Of the 24 users who responded to a follow-up satisfaction survey, 83% indicated they would share the SCP with their healthcare team although half of respondents felt it should include more information. In all, our results demonstrate that there is a population of pancreatic cancer survivors who exist and seek survivorship support although structured survivorship care planning is lacking in practice. SCPs have a potentially valuable role for these survivors via communication of treatment-related effects and coordination across multidisciplinary healthcare teams. Further development and evaluation of SCPs is needed for this underserved survivor population.

14.
Radiother Oncol ; 124(2): 271-276, 2017 08.
Article in English | MEDLINE | ID: mdl-28697854

ABSTRACT

BACKGROUND AND PURPOSE: Proton reirradiation for sarcoma has not been previously described. We hypothesized that this strategy would provide favorable toxicity and survival outcomes. MATERIAL AND METHODS: Patients with soft tissue sarcoma in a previously-irradiated field were enrolled on a prospective trial of proton reirradiation. The primary endpoint was provider-reported acute toxicity. Secondary endpoints included late toxicities, local control, and overall survival. RESULTS: 23 patients underwent proton reirradiation. Median time between radiation courses was 40.7months (range 10-272). No grade 4-5 toxicities were observed. One patient (4%) experienced acute grade 3 dysphagia. Common grade 2 acute toxicities were fatigue (26%), anorexia (17%), and urinary incontinence (13%). There were two grade 3 late wound infections (10%) and one grade 3 late wound complication (5%). Grade 2 late complications included lymphedema (10%), fracture (5%), and fibrosis (5%). At a median follow-up of 36months, the 3-year cumulative incidence of local failure was 41% (95% CI [20-63%]). Median overall survival and progression-free survival were 44 and 29months, respectively. In extremity patients, amputation was spared in 7/10 (70%). CONCLUSIONS: Proton reirradiation of recurrent/secondary soft tissue sarcomas is well tolerated. While longer follow-up is needed, early survival outcomes in this high-risk population are encouraging.


Subject(s)
Neoplasm Recurrence, Local/radiotherapy , Proton Therapy/methods , Sarcoma/radiotherapy , Anorexia/etiology , Deglutition Disorders/etiology , Disease-Free Survival , Fatigue/etiology , Female , Humans , Male , Middle Aged , Neoplasm Recurrence, Local/diagnostic imaging , Prospective Studies , Proton Therapy/adverse effects , Radiation Injuries/etiology , Re-Irradiation/adverse effects , Re-Irradiation/methods , Sarcoma/diagnostic imaging
15.
Cancer ; 123(21): 4268-4276, 2017 Nov 01.
Article in English | MEDLINE | ID: mdl-28654153

ABSTRACT

BACKGROUND: The survivorship needs of patients living with chronic cancer (CC) and their use of survivorship care plans (SCPs) have been overlooked and underappreciated. METHODS: A convenience sample of 39,088 SCPs completed for cancer survivors with an Internet-based SCP tool was examined; it included 5847 CC survivors (15%; CC was defined as chronic leukemia and/or recurrent/metastatic cancer of another nature). Patient-reported treatment effects and follow-up care patterns were compared between CC survivors and survivors treated with curative intent (CI). Responses from a follow-up survey regarding SCP satisfaction and use were reviewed. RESULTS: CC survivors had greater odds of experiencing multiple treatment-related effects than survivors treated with CI; these effects included fatigue, cognitive changes, dyspnea, peripheral neuropathy, lymphedema, and erectile dysfunction. Nearly half of CC survivors were managed by an oncologist alone, and they were less likely than CI patients to be comanaged by a primary care provider and an oncologist. Fewer SCPs were generated by health care providers (HCPs) for CC survivors versus CI survivors. A smaller proportion of CC users versus CI users rated their experience and satisfaction with the SCP tool as very good or excellent, and CC users were less likely to share the HCP summary with their health care team. CONCLUSIONS: A substantial number of CC survivors, often considered incurable but treatable, seek survivorship support. Tools to facilitate participation, communication, and coordination of care are valuable for these patients, and future iterations of SCPs should be designed to address the particular circumstances of living with CC. Cancer 2017;123:4268-4276. © 2017 American Cancer Society.


Subject(s)
Continuity of Patient Care , Needs Assessment , Neoplasm Recurrence, Local/therapy , Neoplasms/therapy , Survivors , Breast Neoplasms/psychology , Breast Neoplasms/therapy , Chronic Disease , Communication , Female , Humans , Leukemia/therapy , Lymphoma/therapy , Male , Middle Aged , Neoplasms/psychology , Neoplasms, Second Primary , Patient Education as Topic/methods , Patient Reported Outcome Measures , Patient Satisfaction
16.
Cancer ; 123(10): 1860-1868, 2017 05 15.
Article in English | MEDLINE | ID: mdl-28055110

ABSTRACT

BACKGROUND: There is significant need for quality follow-up care to optimize long-term outcomes for the growing population of lower gastrointestinal (GI) cancer survivors. Patient-reported outcomes (PROs) provide valuable information regarding late and long-term effects (LLTEs). METHODS: A convenience sample from 1129 colon, rectal, and anal cancer survivors (n = 792; 218, and 119, respectively) who participated in an Internet-based survivorship care plan (SCP) tool between May 2010 and October 2014 was used to examine patient-reported demographics, treatment, and toxicity data. Responses from a follow-up survey were reviewed. RESULTS: The median age of diagnosis was 51 years, and 81% of survivors were Caucasian. The most commonly reported LLTEs for all survivors were neuropathy, fatigue, cognitive changes, changes in GI function, urogenital and sexual dysfunction, and dermatologic effects. The prevalence of these effects varied with time since diagnosis, treatment modality, and treatment center. Individuals who had survived anal cancer reported a high prevalence of sexual dysfunction and radiation-induced dermatologic effects. Over 87% of users reported satisfaction levels of good to excellent using the SCP tool, and 69% reported that they intend to share the SCP with their health care team. CONCLUSIONS: For lower GI cancer survivors, it is feasible to obtain PROs from an Internet-based survivorship tool. Survivors report a wide spectrum of LLTEs, and these can be used to inform counseling at the time of diagnosis and to help anticipate and respond to disease-related and treatment-related sequelae during follow-up. The authors are among the first to report on PROs in anal cancer survivors. Further investigation on the impact of SCPs on health care communication and use is needed. Cancer 2017;123:1860-1868. © 2017 American Cancer Society.


Subject(s)
Anus Neoplasms/therapy , Cognitive Dysfunction/epidemiology , Colorectal Neoplasms/therapy , Fatigue/epidemiology , Patient Reported Outcome Measures , Peripheral Nervous System Diseases/epidemiology , Radiodermatitis/epidemiology , Sexual Dysfunction, Physiological/epidemiology , Survivors , Adolescent , Adult , Aged , Aged, 80 and over , Colitis/epidemiology , Erectile Dysfunction/epidemiology , Female , Gastrointestinal Diseases/epidemiology , Humans , Internet , Male , Middle Aged , Radiation Injuries/epidemiology , Skin Diseases/epidemiology , Surveys and Questionnaires , Urinary Bladder Diseases/epidemiology , Young Adult
17.
PLoS One ; 8(6): e66357, 2013.
Article in English | MEDLINE | ID: mdl-23840449

ABSTRACT

The bony shell of the turtle is an evolutionary novelty not found in any other group of animals, however, research into its formation has suggested that it has evolved through modification of conserved developmental mechanisms. Although these mechanisms have been extensively characterized in model organisms, the tools for characterizing them in non-model organisms such as turtles have been limited by a lack of genomic resources. We have used a next generation sequencing approach to generate and assemble a transcriptome from stage 14 and 17 Trachemys scripta embryos, stages during which important events in shell development are known to take place. The transcriptome consists of 231,876 sequences with an N50 of 1,166 bp. GO terms and EC codes were assigned to the 61,643 unique predicted proteins identified in the transcriptome sequences. All major GO categories and metabolic pathways are represented in the transcriptome. Transcriptome sequences were used to amplify several cDNA fragments designed for use as RNA in situ probes. One of these, BMP5, was hybridized to a T. scripta embryo and exhibits both conserved and novel expression patterns. The transcriptome sequences should be of broad use for understanding the evolution and development of the turtle shell and for annotating any future T. scripta genome sequences.


Subject(s)
Gene Expression Profiling/methods , High-Throughput Nucleotide Sequencing/methods , Sequence Analysis, RNA/methods , Turtles/embryology , Animals , Biological Evolution , Gene Expression Regulation, Developmental , Gene Regulatory Networks , Turtles/genetics
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