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Pancreatic Neoplasms: HELP
Articles by Ross C. Donehower
Based on 12 articles published since 2010
(Why 12 articles?)

Between 2010 and 2020, R. Donehower wrote the following 12 articles about Pancreatic Neoplasms.
+ Citations + Abstracts
1 Clinical Trial Evaluation of ipilimumab in combination with allogeneic pancreatic tumor cells transfected with a GM-CSF gene in previously treated pancreatic cancer. 2013

Le, Dung T / Lutz, Eric / Uram, Jennifer N / Sugar, Elizabeth A / Onners, Beth / Solt, Sara / Zheng, Lei / Diaz, Luis A / Donehower, Ross C / Jaffee, Elizabeth M / Laheru, Daniel A. ·The Sidney Kimmel Cancer Center, the Skip Viragh Center for Pancreatic Cancer, Research and Clinical Care, and the Sol Goldman Pancreatic Cancer Center at Johns Hopkins, Baltimore, MD, USA. dle2@jhmi.edu ·J Immunother · Pubmed #23924790.

ABSTRACT: Preclinical reports support the concept of synergy between cancer vaccines and immune checkpoint blockade in nonimmunogenic tumors. In particular, cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) antibodies have been successfully combined with GM-CSF cell-based vaccines (GVAX). Ipilimumab (anti-CTLA-4) has been tested as a single agent in patients with pancreatic ductal adenocarcinoma (PDA) resulting in a delayed response at a dose of 3 mg/kg. Our study evaluated ipilimumab 10 mg/kg (arm 1) and ipilimumab 10 mg/kg + GVAX (arm 2). A total of 30 patients with previously treated advanced PDA were randomized (1:1). Induction doses were administered every 3 weeks for a total of 4 doses followed by maintenance dosing every 12 weeks. Two patients in arm 1 showed evidence of stable disease (7 and 22 wk) but none demonstrated CA19-9 biochemical responses. In contrast, 3 patients in arm 2 had evidence of prolonged disease stabilization (31, 71, and 81 wk) and 7 patients experienced CA19-9 declines. In 2 of these patients, disease stabilization occurred after an initial period of progression. The median overall survival (OS) (3.6 vs. 5.7 mo, hazards ratio: 0.51, P = 0.072) and 1 year OS (7 vs. 27%) favored arm 2. Similar to prior ipilimumab studies, 20% of patients in each arm had grade 3/4 immune-related adverse events. Among patients with OS > 4.3 months, there was an increase in the peak mesothelin-specific T cells (P = 0.014) and enhancement of the T-cell repertoire (P = 0.031). In conclusion, checkpoint blockade in combination with GVAX has the potential for clinical benefit and should be evaluated in a larger study.

2 Clinical Trial Phase 2 study of erlotinib combined with adjuvant chemoradiation and chemotherapy in patients with resectable pancreatic cancer. 2013

Herman, Joseph M / Fan, Katherine Y / Wild, Aaron T / Hacker-Prietz, Amy / Wood, Laura D / Blackford, Amanda L / Ellsworth, Susannah / Zheng, Lei / Le, Dung T / De Jesus-Acosta, Ana / Hidalgo, Manuel / Donehower, Ross C / Schulick, Richard D / Edil, Barish H / Choti, Michael A / Hruban, Ralph H / Pawlik, Timothy M / Cameron, John L / Laheru, Daniel A / Wolfgang, Christopher L. ·Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, Baltimore, Maryland 21231, USA. jherma15@jhmi.edu ·Int J Radiat Oncol Biol Phys · Pubmed #23773391.

ABSTRACT: PURPOSE: Long-term survival rates for patients with resected pancreatic ductal adenocarcinoma (PDAC) have stagnated at 20% for more than a decade, demonstrating the need to develop novel adjuvant therapies. Gemcitabine-erlotinib therapy has demonstrated a survival benefit for patients with metastatic PDAC. Here we report the first phase 2 study of erlotinib in combination with adjuvant chemoradiation and chemotherapy for resected PDAC. METHODS AND MATERIALS: Forty-eight patients with resected PDAC received adjuvant erlotinib (100 mg daily) and capecitabine (800 mg/m(2) twice daily Monday-Friday) concurrently with intensity modulated radiation therapy (IMRT), 50.4 Gy over 28 fractions followed by 4 cycles of gemcitabine (1000 mg/m(2) on days 1, 8, and 15 every 28 days) and erlotinib (100 mg daily). The primary endpoint was recurrence-free survival (RFS). RESULTS: The median follow-up time was 18.2 months (interquartile range, 13.8-27.1). Lymph nodes were positive in 85% of patients, and margins were positive in 17%. The median RFS was 15.6 months (95% confidence interval [CI], 13.4-17.9), and the median overall survival (OS) was 24.4 months (95% CI, 18.9-29.7). Multivariate analysis with adjustment for known prognostic factors showed that tumor diameter >3 cm was predictive for inferior RFS (hazard ratio, 4.01; P=.001) and OS (HR, 4.98; P=.02), and the development of dermatitis was associated with improved RFS (HR, 0.27; P=.009). During CRT and post-CRT chemotherapy, the rates of grade 3/4 toxicity were 31%/2% and 35%/8%, respectively. CONCLUSION: Erlotinib can be safely administered with adjuvant IMRT-based CRT and chemotherapy. The efficacy of this regimen appears comparable to that of existing adjuvant regimens. Radiation Therapy Oncology Group 0848 will ultimately determine whether erlotinib produces a survival benefit in patients with resected pancreatic cancer.

3 Clinical Trial Randomized phase III multi-institutional study of TNFerade biologic with fluorouracil and radiotherapy for locally advanced pancreatic cancer: final results. 2013

Herman, Joseph M / Wild, Aaron T / Wang, Hao / Tran, Phuoc T / Chang, Kenneth J / Taylor, Gretchen E / Donehower, Ross C / Pawlik, Timothy M / Ziegler, Mark A / Cai, Hongyan / Savage, Dionne T / Canto, Marcia I / Klapman, Jason / Reid, Tony / Shah, Raj J / Hoffe, Sarah E / Rosemurgy, Alexander / Wolfgang, Christopher L / Laheru, Daniel A. ·Department of Radiation Oncology & Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Hospital, 401 N. Broadway, Weinberg Suite 1440, Baltimore, MD 21231, USA. jherma15@jhmi.edu ·J Clin Oncol · Pubmed #23341531.

ABSTRACT: PURPOSE: TNFerade biologic is a novel means of delivering tumor necrosis factor alpha to tumor cells by gene transfer. We herein report final results of the largest randomized phase III trial performed to date among patients with locally advanced pancreatic cancer (LAPC) and the first to test gene transfer against this malignancy. PATIENTS AND METHODS: In all, 304 patients were randomly assigned 2:1 to standard of care plus TNFerade (SOC + TNFerade) versus standard of care alone (SOC). SOC consisted of 50.4 Gy in 28 fractions with concurrent fluorouracil (200 mg/m(2) per day continuous infusion). TNFerade was injected intratumorally before the first fraction of radiotherapy each week at a dose of 4 × 10(11) particle units by using either a percutaneous transabdominal or an endoscopic ultrasound approach. Four weeks after chemoradiotherapy, patients began gemcitabine (1,000 mg/m(2) intravenously) with or without erlotinib (100 to 150 mg per day orally) until progression or toxicity. RESULTS: The analysis included 187 patients randomly assigned to SOC + TNFerade and 90 to SOC by using a modified intention-to-treat approach. Median follow-up was 9.1 months (range, 0.1 to 50.5 months). Median survival was 10.0 months for patients in both the SOC + TNFerade and SOC arms (hazard ratio [HR], 0.90; 95% CI, 0.66 to 1.22; P = .26). Median progression-free survival (PFS) was 6.8 months for SOC + TNFerade versus 7.0 months for SOC (HR, 0.96; 95% CI, 0.69 to 1.32; P = .51). Among patients treated on the SOC + TNFerade arm, multivariate analysis showed that TNFerade injection by an endoscopic ultrasound-guided transgastric/transduodenal approach rather than a percutaneous transabdominal approach was a risk factor for inferior PFS (HR, 2.08; 95% CI, 1.06 to 4.06; P = .032). The patients in the SOC + TNFerade arm experienced more grade 1 to 2 fever and chills than those in the SOC arm (P < .001) but both arms had similar rates of grade 3 to 4 toxicities (all P > .05). CONCLUSION: SOC + TNFerade is safe but not effective for prolonging survival in patients with LAPC.

4 Clinical Trial Integrated preclinical and clinical development of S-trans, trans-Farnesylthiosalicylic Acid (FTS, Salirasib) in pancreatic cancer. 2012

Laheru, Daniel / Shah, Preeti / Rajeshkumar, N V / McAllister, Florencia / Taylor, Gretchen / Goldsweig, Howard / Le, Dung T / Donehower, Ross / Jimeno, Antonio / Linden, Sheila / Zhao, Ming / Song, Dongweon / Rudek, Michelle A / Hidalgo, Manuel. ·Department of Medical Oncology, Skip Viragh Center for Pancreatic Cancer Research and Patient Care, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Bunting- Blaustein Cancer Research Building, Room 4M09, Baltimore, MD 21231, USA. laherda@jhmi.edu ·Invest New Drugs · Pubmed #22547163.

ABSTRACT: PURPOSE: S-trans,trans-Farnesylthiosalicylic Acid (FTS, salirasib) inhibits Ras-dependent cell growth by dislodging all isoforms of Ras, including mutant Ras, from the plasma membrane. This study evaluated the activity, safety, and toxicity of salirasib in preclinical models and patients with metastatic pancreatic adenocarcinoma (PDA). PATIENTS AND METHODS: In the preclinical study, salirasib was tested, alone and in combination with gemcitabine, in patient derived xenografts (PDX) of PDA. In the clinical study, treatment-naïve patients with advanced, metastatic PDA were treated with a standard dose schedule of gemcitabine and salirasib 200-800 mg orally (PO) twice daily (bid) for 21 days every 28 days. Tissue from preclinical models and patients' biopsies were collected pre-treatment and on Cycle (C) 1, Day (D) 9 to characterize the effect of gemcitabine and salirasib on activated Ras protein levels. Plasma samples for pharmacokinetics were collected for salirasib administered alone and in combination. RESULTS: Salirasib inhibited the growth of 2/14 PDX models of PDA and modulated Ras signaling in these tumors. Nineteen patients were enrolled. No DLTs occurred. Common adverse events included hematologic and gastrointestinal toxicities and fatigue. The median overall survival was 6.2 months and the 1 year survival 37 %. In 2 patients in whom paired tissue biopsies were available, Ras and KRas protein levels were decreased on C1D9. Salirasib exposure was not altered by gemcitabine and did not correlate with PD outcomes. CONCLUSION: The combination of gemcitabine and salirasib appears well-tolerated, with no alteration of salirasib exposure, and exerted clinical and PD activity in PDA.

5 Clinical Trial Personalizing cancer treatment in the age of global genomic analyses: PALB2 gene mutations and the response to DNA damaging agents in pancreatic cancer. 2011

Villarroel, Maria C / Rajeshkumar, N V / Garrido-Laguna, Ignacio / De Jesus-Acosta, Ana / Jones, Siân / Maitra, Anirban / Hruban, Ralph H / Eshleman, James R / Klein, Alison / Laheru, Daniel / Donehower, Ross / Hidalgo, Manuel. ·Corresponding Author: Manuel Hidalgo, Clinical Research Program, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro, 3, 28029, Madrid, Spain. ·Mol Cancer Ther · Pubmed #21135251.

ABSTRACT: Metastasis and drug resistance are the major causes of mortality in patients with pancreatic cancer. Once developed, the progression of pancreatic cancer metastasis is virtually unstoppable with current therapies. Here, we report the remarkable clinical outcome of a patient with advanced, gemcitabine-resistant, pancreatic cancer who was later treated with DNA damaging agents, on the basis of the observation of significant activity of this class of drugs against a personalized xenograft generated from the patient's surgically resected tumor. Mitomycin C treatment, selected on the basis of its robust preclinical activity in a personalized xenograft generated from the patient's tumor, resulted in long-lasting (36+ months) tumor response. Global genomic sequencing revealed biallelic inactivation of the gene encoding PalB2 protein in this patient's cancer; the mutation is predicted to disrupt BRCA1 and BRCA2 interactions critical to DNA double-strand break repair. This work suggests that inactivation of the PALB2 gene is a determinant of response to DNA damage in pancreatic cancer and a new target for personalizing cancer treatment. Integrating personalized xenografts with unbiased exomic sequencing led to customized therapy, tailored to the genetic environment of the patient's tumor, and identification of a new biomarker of drug response in a lethal cancer.

6 Clinical Trial Thymidylate synthase (TYMS) enhancer region genotype-directed phase II trial of oral capecitabine for 2nd line treatment of advanced pancreatic cancer. 2011

Weekes, Colin D / Nallapareddy, Sujatha / Rudek, Michelle A / Norris-Kirby, Alexis / Laheru, Daniel / Jimeno, Antonio / Donehower, Ross C / Murphy, Kathleen M / Hidalgo, Manuel / Baker, Sharyn D / Messersmith, Wells A. ·University of Colorado Cancer Center, 12801 E 17th Avenue, RC-1 South, Rm 8123, MS 8117, Aurora, CO 80045, USA. colin.weekes@ucdenver.edu ·Invest New Drugs · Pubmed #20306339.

ABSTRACT: PURPOSE: The primary aim of this study was to characterize the 6-month overall survival and toxicity associated with second-line capecitabine treatment of advanced pancreatic cancer patients harboring the TYMS *2/*2 allele. The secondary aim was to analyze the response rate and pharmacokinetics of capecitabine-based therapy in this patient population. Lastly, TYMS, ATM and RecQ1 single nucleotide polymorphism were analyzed relative to overall survival in patients screened for study participation. METHODS: Eighty patients with stage IV pancreatic cancer were screened for the *2/*2 TYMS allele. Patients with the *2/*2 TYMS polymorphism were treated with capecitabine, 1,000 mg/m2 twice daily for 14 consecutive days of a 21 day cycle. Screened patients not possessing TYMS *2/*2 were monitored for survival. Pharmacokinetic analysis was done during Cycle 1 of the therapy. RESULTS: Sixteen of the 80 screened patients tested positive for *2/*2 TYMS variant. Four out of the 16 eligible patients were treated on study. The study was terminated early due to poor accrual and increased toxicity. Three patients experienced grade 3 non-hematologic toxicities of palmer-plantar erythrodysesthesia, diarrhea, nausea and vomiting. Grade 2 toxicities were similar and occurred in all patients. Only one patient was evaluable for response after completion of three cycles of therapy. The presence of the *2/*2 TYMS genotype in all of the screened patients trended toward a decreased overall survival. CONCLUSION: To our knowledge, this study represents the first genotype-directed clinical trial for patients with pancreatic adenocarcinoma. Although the study was closed early, it appears capecitabine therapy in pancreatic cancer patients harboring the TYMS *2/*2 variant may be associated with increased non-hematologic toxicity. This study also demonstrates the challenges performing a genotype-directed study in the second-line setting for patients with advanced pancreatic cancer.

7 Article Long-term survival benefit of upfront chemotherapy in patients with newly diagnosed borderline resectable pancreatic cancer. 2017

Shrestha, Bikram / Sun, Yifei / Faisal, Farzana / Kim, Victoria / Soares, Kevin / Blair, Alex / Herman, Joseph M / Narang, Amol / Dholakia, Avani S / Rosati, Lauren / Hacker-Prietz, Amy / Chen, Linda / Laheru, Daniel A / De Jesus-Acosta, Ana / Le, Dung T / Donehower, Ross / Azad, Nilofar / Diaz, Luis A / Murphy, Adrian / Lee, Valerie / Fishman, Elliot K / Hruban, Ralph H / Liang, Tingbo / Cameron, John L / Makary, Martin / Weiss, Matthew J / Ahuja, Nita / He, Jin / Wolfgang, Christopher L / Huang, Chiung-Yu / Zheng, Lei. ·Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland. · Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · Department of Radiation Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · Department of Radiation Oncology, M.D. Anderson Cancer Center, Houston, Texas. · Department of Radiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland. · The Second Affiliated Hospital of Zhejiang University, Hangzhou, China. ·Cancer Med · Pubmed #28639410.

ABSTRACT: The use of neoadjuvant chemotherapy or radiation for borderline resectable pancreatic adenocarcinoma (BL-PDAC) is increasing. However, the impact of neoadjuvant chemotherapy and radiation therapy on the outcome of BL-PDAC remains to be elucidated. We performed a retrospective analysis of 93 consecutive patients who were diagnosed with BL-PDAC and primarily followed at Johns Hopkins Hospital between February 2007 and December 2012. Among 93 patients, 62% received upfront neoadjuvant chemotherapy followed by chemoradiation, whereas 20% received neoadjuvant chemoradiation alone and 15% neoadjuvant chemotherapy alone. Resectability following all neoadjuvant therapy was 44%. Patients who underwent resection with a curative intent had a median overall survival (mOS) of 25.8 months, whereas those who did not undergo surgery had a mOS of 11.9 months. However, resectability and overall survival were not significantly different between the three types of neoadjuvant therapy. Nevertheless, 22% (95% CI, 0.13-0.36) of the 58 patients who received upfront chemotherapy followed by chemoradiation remained alive for a minimum of 48 months compared to none of the 19 patients who received upfront chemoradiation. Among patients who underwent curative surgical resection, 32% (95% CI, 0.19-0.55) of those who received upfront chemotherapy remained disease free at least 48 months following surgical resection, whereas none of the eight patients who received upfront chemoradiation remained disease free beyond 24 months following surgical resection. Neoadjuvant therapy with upfront chemotherapy may result in long-term survival in a subpopulation of patients with BL-PDAC.

8 Article Olaparib in combination with irinotecan, cisplatin, and mitomycin C in patients with advanced pancreatic cancer. 2017

Yarchoan, Mark / Myzak, Melinda C / Johnson, Burles A / De Jesus-Acosta, Ana / Le, Dung T / Jaffee, Elizabeth M / Azad, Nilofer S / Donehower, Ross C / Zheng, Lei / Oberstein, Paul E / Fine, Robert L / Laheru, Daniel A / Goggins, Michael. ·The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA. · Columbia University Medical Center, New York, NY, USA. ·Oncotarget · Pubmed #28454122.

ABSTRACT: BACKGROUND: Olaparib is an oral inhibitor of polyadenosine 5'-diphosphoribose polymerization (PARP) that has previously shown signs of activity in patients with BRCA mutations and pancreatic ductal adenocarcinoma (PDAC). PATIENTS AND METHODS: In this phase 1 dose-escalation trial in patients with unresectable PDAC, we determined the maximum tolerated dose (MTD) of olaparib (tablet formulation) in combination with irinotecan 70 mg/m2 on days 1 and 8 and cisplatin 25 mg/m2 on days 1 and 8 of a 28-day cycle (olaparib plus IC). We then studied the safety and tolerability of adding mitomycin C 5 mg/m2 on day 1 to this regimen (olaparib plus ICM). RESULTS: 18 patients with unresectable PDAC were enrolled. The MTD of olaparib plus IC was olaparib 100 mg twice-daily on days 1 and 8. The addition of mitomycin C to this dose level was not tolerated. Grade ≥3 drug-related adverse events (AEs) were encountered in 16 patients (89%). The most common grade ≥3 drug-related toxicities included neutropenia (89%), lymphopenia (72%), and anemia (22%). Two patients (11%), both of whom had remained on study for more than 12 cycles, developed drug-related myelodysplastic syndrome (MDS). The objective response rate (ORR) for all evaluable patients was 23%. One patient who carried a deleterious germline BRCA2 mutation had a durable clinical response lasting more than four years, but died from complications of treatment-related MDS. CONCLUSIONS: Olaparib had substantial toxicity when combined with IC or ICM in patients with PDAC, and this treatment combination did not have an acceptable risk/benefit profile for further study. However, durable clinical responses were observed in a subset of patients and further clinical investigation of PARP inhibitors in PDAC is warranted. TRIAL REGISTRATION: This clinical trial was registered on ClinicalTrials.gov as NCT01296763.

9 Article Longer Course of Induction Chemotherapy Followed by Chemoradiation Favors Better Survival Outcomes for Patients With Locally Advanced Pancreatic Cancer. 2016

Faisal, Farzana / Tsai, Hua-Ling / Blackford, Amanda / Olino, Kelly / Xia, Chang / De Jesus-Acosta, Ana / Le, Dung T / Cosgrove, David / Azad, Nilofer / Rasheed, Zeshaan / Diaz, Luis A / Donehower, Ross / Laheru, Daniel / Hruban, Ralph H / Fishman, Elliot K / Edil, Barish H / Schulick, Richard / Wolfgang, Christopher / Herman, Joseph / Zheng, Lei. ·*Departments of Oncology, Surgery, and Radiation Oncology, Johns Hopkins University School of Medicine, Baltimore, MD †Department of Surgery, University of Colorado School of Medicine, Denver, CO. ·Am J Clin Oncol · Pubmed #24351782.

ABSTRACT: OBJECTIVES: At diagnosis, 30% of patients with pancreatic cancer are unresectable stage 3 locally advanced. The standard treatment for locally advanced pancreatic cancer (LAPC) is not defined. The current study was conducted to assess the roles of chemotherapy and chemoradiation for LAPC treatment. MATERIALS AND METHODS: Between June 2006 and March 2011, 100 patients with LAPC were treated at the Johns Hopkins Hospital. Retrospective analysis was performed to compare cumulative incidence of progression (CIP) and overall survival (OS) among different subgroups. RESULTS: For the 100 patients, the median OS was 15.8 months and the median CIP was 8.4 months. The combination of chemotherapy and chemoradiation before disease progression was significantly associated with improved CIP (P=0.001) and improved OS when compared with chemoradiation alone (median OS: 16.4 vs. 11.1 mo, P=0.03). Among patients receiving combination treatment, patients who received chemotherapy first followed by chemoradiation had a trend toward lower CIP (P=0.09) and improved OS (median OS: 18.1 vs. 11.0 mo, P=0.09). Patients who received >2 cycles of chemotherapy before chemoradiation had a significantly decreased CIP (P=0.008) and a trend toward better OS (median OS: 19.4 vs. 15.7 mo, P=0.10). On multivariate analysis, receiving >2 cycles of chemotherapy before chemoradiation was associated with improved CIP. CONCLUSIONS: Although combination chemotherapy and chemoradiation is favored in the treatment of LAPC, longer induction chemotherapy may play a more important role in sensitization of tumors to subsequent chemoradiation. Our results support treating patients with induction chemotherapy for at least 3 cycles followed by consolidative chemoradiation. These results merit further validation by a prospective study.

10 Article Correlation of Smad4 status with outcomes in patients receiving erlotinib combined with adjuvant chemoradiation and chemotherapy after resection for pancreatic adenocarcinoma. 2013

Herman, Joseph M / Fan, Katherine Y / Wild, Aaron T / Wood, Laura D / Blackford, Amanda L / Donehower, Ross C / Hidalgo, Manuel / Schulick, Richard D / Edil, Barish H / Choti, Michael A / Hruban, Ralph H / Pawlik, Timothy M / Cameron, John L / Laheru, Daniel A / Iacobuzio-Donahue, Christine A / Wolfgang, Christopher L. ·Department of Radiation Oncology & Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland. Electronic address: jherma15@jhmi.edu. ·Int J Radiat Oncol Biol Phys · Pubmed #24074918.

ABSTRACT: -- No abstract --

11 Article A multicenter analysis of GTX chemotherapy in patients with locally advanced and metastatic pancreatic adenocarcinoma. 2012

De Jesus-Acosta, Ana / Oliver, George R / Blackford, Amanda / Kinsman, Katharine / Flores, Edna I / Wilfong, Lalan S / Zheng, Lei / Donehower, Ross C / Cosgrove, David / Laheru, Daniel / Le, Dung T / Chung, Ki / Diaz, Luis A. ·Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, 1650 Orleans Street, CRB I, Room 590, Baltimore, MD 21231, USA. ·Cancer Chemother Pharmacol · Pubmed #21800112.

ABSTRACT: PURPOSE: Studies treating adenocarcinoma of the pancreas with gemcitabine alone or in combination with a doublet have demonstrated modest improvements in survival. Recent reports have suggested that using the triple-drug regimen FOLFIRINOX can substantially extend survival in patients with metastatic disease. We were interested in determining the clinical benefit of another three-drug regimen of gemcitabine, docetaxel and capecitabine (GTX) in patients with advanced pancreatic adenocarcinoma. PATIENTS AND METHODS: The cases of 154 patients, who received treatment with GTX chemotherapy with histologically confirmed locally advanced or metastatic pancreatic adenocarcinoma, were retrospectively reviewed. All demographic and clinical data were captured including prior therapy, adverse events, treatment response and survival. RESULTS: One hundred and seventeen metastatic and 37 locally advanced cases of adenocarcinoma of the pancreas were reviewed. Partial responses were noted in 11% of cases, and stable disease was observed in 62% of patients. Responses significantly correlated with toxicity (neutropenia, ALT elevation and hospitalizations). Grade 3 or greater hematologic and non-hematologic toxicities were noted in 41% and 9% of cases, respectively. Overall median survival was 11.6 months. Chemotherapy naïve patients with metastatic and locally advanced disease achieved a median survival of 11.3 and 25.0 months, respectively. CONCLUSIONS: We observe a substantial survival benefit with GTX chemotherapy in our cohort of patients with advanced pancreatic cancer. These findings warrant further investigation of this combination in this patient population.

12 Article Integrated preclinical and clinical development of mTOR inhibitors in pancreatic cancer. 2010

Garrido-Laguna, I / Tan, A C / Uson, M / Angenendt, M / Ma, W W / Villaroel, M C / Zhao, M / Rajeshkumar, N V / Jimeno, A / Donehower, R / Iacobuzio-Donahue, C / Barrett, M / Rudek, M A / Rubio-Viqueira, B / Laheru, D / Hidalgo, M. ·The Sidney Kimmel Comprehensive Cancer Centre at Johns Hopkins and the Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University, Baltimore, MD, USA. ·Br J Cancer · Pubmed #20664591.

ABSTRACT: BACKGROUND: The purpose of this work was to determine the efficacy of inhibiting mammalian target of rapamycin (mTOR) in pancreatic cancer preclinical models and translate preclinical observations to the clinic. METHODS: Temsirolimus (20 mg Kg(-1) daily) was administered to freshly generated pancreatic cancer xenografts. Tumour growth inhibition was determined after 28 days. Xenografts were characterised at baseline by gene expression and comparative genomic hybridisation. Patients with advanced, gemcitabine-resistant pancreatic cancer were treated with sirolimus (5 mg daily). The primary end point was 6-month survival rate (6mSR). Correlative studies included immunohistochemistry assessment of pathway expression in baseline tumours, drug pharmacokinetics (PKs), response assessment by FDG-PET and pharmacodynamic effects in peripheral-blood mononuclear cells (PBMCs). RESULTS: In all, 4 of 17 xenografts (23%) responded to treatment. Sensitive tumours were characterised by gene copy number variations and overexpression of genes leading to activation of the PI3K/Akt/mTOR pathway. Activation of p70S6K correlated with drug activity in the preclinical studies. Sirolimus was well tolerated in the clinic, showed predictable PKs, exerted pathway inhibition in post-treatment PBMCs and resulted in a 6mSR of 26%. No correlation, however, was found between activated p70S6K in tumour tissues and anti-tumour effects. CONCLUSION: Sirolimus activity in pancreatic cancer was marginal and not predicted by the selected biomarker.