LOS ANGELES--(BUSINESS WIRE)--Puma Biotechnology, Inc. (Nasdaq: PBYI), a biopharmaceutical company, announced that interim results from a Phase II clinical trial of Pumas investigational drug PB272 (neratinib) were presented at the 2017 American Association for Cancer Research Annual Meeting (AACR) that is currently taking place in Washington, D.C. The presentation, entitled Effects of adding budesonide or colestipol to loperamide prophylaxis on neratinib-associated diarrhea in patients with HER2-positive early stage breast cancer: the CONTROL trial, was presented as a poster presentation.
The main adverse event that has been seen to date in clinical trials of neratinib is diarrhea and more specifically grade 3 diarrhea. In the Phase III ExteNET trial of neratinib as extended adjuvant treatment of HER2-positive early stage breast cancer that has previously been treated with adjuvant Herceptin, 95.4% of the patients experienced all grade diarrhea and 39.8% of the patients experienced grade 3 or higher diarrhea (there was one event of grade 4 diarrhea). The CONTROL trial is an international, open-label, Phase II study investigating the use of loperamide prophylaxis with or without other agents in the reduction of neratinib-associated diarrhea that has a primary endpoint of the incidence of grade 3 diarrhea.
In the CONTROL trial, patients with HER2-positive early stage breast cancer who had completed trastuzumab-based adjuvant therapy received neratinib daily for a period of one year. High dose loperamide prophylaxis was given for the first 2 cycles (56 days) of treatment. Initially, the loperamide dosing used was 16 mg on day 1, then 12 mg on days 2 and 3 and then 6-8 mg on days 4-56 (original dosing). The protocol was later amended to simplify the regimen such that patients took 12 mg on days 1-14 and 8 mg on days 15-56 (modified dosing). The CONTROL trial was also expanded to include two additional cohorts. One cohort received the combination of loperamide and budesonide and the other cohort received the combination of loperamide plus colestipol. Budesonide is a locally acting corticosteroid that the Company believes targets the inflammation identified in a preclinical model of neratinib-induced diarrhea and colestipol is a bile acid sequestrant that the Company believes targets the bile acid malabsorption also seen in preclinical models of neratinib-induced diarrhea.
The interim analysis of the trial presented in the poster included a total of 137 patients who received neratinib plus loperamide prophylaxis (28 patients taking the original dosing and 109 patients taking the modified dosing), 64 patients who received neratinib plus loperamide prophylaxis for 2 cycles and budesonide for 1 cycle, and 26 patients who received neratinib plus loperamide prophylaxis for 1 cycle and colestipol for 1 cycle.
The results of the trial showed that the incidence of grade 3 diarrhea for the 137 patients who received the loperamide prophylaxis was 30.7%. For the 137 patients who received the loperamide prophylaxis, the median number of grade 3 diarrhea episodes per patient was 1 and the median cumulative duration of grade 3 diarrhea was 3 days. For the 137 patients who received loperamide prophylaxis, 20.4% discontinued neratinib due to diarrhea.
For the 64 patients who received the combination of loperamide plus budesonide, the results of the trial showed that the incidence of grade 3 diarrhea was 23.4%. The median number of grade 3 diarrhea episodes per patient was 1 and the median cumulative duration of grade 3 diarrhea was 2 days. For the 64 patients who received loperamide plus budesonide prophylaxis, 9.4% discontinued neratinib due to diarrhea.
For the 26 patients who received the combination of loperamide plus colestipol, the results of the trial showed that the incidence of grade 3 diarrhea was 11.5%. The median number of grade 3 diarrhea episodes per patient was 2 and the median cumulative duration of grade 3 diarrhea was 2 days. For the 26 patients who received loperamide plus colestipol prophylaxis, no patient (0%) discontinued neratinib due to diarrhea. Further information is provided in Table 1 below:
Table 1: Characteristics of Treatment-Emergent Diarrhea
Loperamide
(original +
modified)
loperamide
loperamide
Loperamide
prn
a
In the ExteNET trial, higher grade (grade 2 and grade 3) diarrhea occurred early and persisted throughout the duration of the 12-month treatment period. In the CONTROL trial, in the loperamide prophylaxis, loperamide plus budesonide prophylaxis and loperamide plus colestipol prophylaxis arms, the results showed that higher grade diarrhea (grades 2 and 3) occurred early but did not typically recur. This is shown in more detail in Figure 1: Treatment Emergent Diarrhea, which is attached to this news release. In addition, a full copy of the poster that was presented at AACR is available on the Puma Biotechnology website.
During the course of the CONTROL trial there has been an increase in the proportion of patients previously treated with pertuzumab (mainly in the neoadjuvant setting). For the 55 patients in the loperamide prophylaxis cohort who received prior pertuzumab, the grade 3 diarrhea rate was 38.2% (Table 2). For the 82 patients who did not receive prior pertuzumab, the grade 3 diarrhea rate was 25.6%. For the 39 patients in the budesonide cohort who received prior pertuzumab, the grade 3 diarrhea rate was 10.3%. For the 25 patients in the budesonide cohort who did not receive prior pertuzumab, the grade 3 diarrhea rate was 36.0%. This analysis suggests that prior pertuzumab exposure may have led to a higher rate of grade 3 diarrhea in the CONTROL trial that was not effectively managed by loperamide prophylaxis alone but was more effectively managed by loperamide plus budesonide.
Table 2: Incidence of Grade 3 Diarrhea in CONTROL by Prior Pertuzumab Treatment
Loperamide Cohort
Budesonide Cohort
(n = 55)
(n = 82)
(n = 39)
(n = 25)
Dr. Carlos H. Barcenas, Assistant Professor, Department of Breast Medical Oncology and Associate Medical Director, Breast Cancer Survivorship Clinic for the University of Texas MD Anderson Cancer Center, said, We are pleased to see the reduction in incidence, severity and duration of neratinib-associated diarrhea when using the three antidiarrheal prophylaxis regimens tested so far in this study. When using either the loperamide prophylaxis, the loperamide plus budesonide prophylaxis or the loperamide plus colestipol prophylaxis, there appears to be a reduction in the incidence and severity of grade 3 diarrhea with neratinib. Importantly, the severe grade 2 and grade 3 diarrhea, when using the prophylaxis, appears to be acute, self-limiting and manageable. Although the study is still ongoing, we are encouraged that the addition of budesonide or colestipol appears to greatly improve the tolerability of neratinib as well. We look forward to completing the loperamide plus colestipol cohort.
Alan H. Auerbach, Chief Executive Officer and President of Puma Biotechnology, said, We are pleased to see the reductions in the incidence of severe neratinib-related diarrhea in the CONTROL trial when using the loperamide, loperamide plus budesonide or loperamide plus colestipol regimens. The severe diarrhea appears to become more acute, whereby it does not typically recur after the first month. We are also very encouraged by the improvements in tolerability that have been seen to date in the budesonide and the colestipol cohorts. This is a marked improvement in tolerability over what was seen in the ExteNET trial and we look forward to continuing to monitor this in the loperamide plus colestipol cohort.
About Puma Biotechnology
Puma Biotechnology, Inc. is a biopharmaceutical company with a focus on the development and commercialization of innovative products to enhance cancer care. The Company in-licenses the global development and commercialization rights to three drug candidatesPB272 (neratinib (oral)), PB272 (neratinib (intravenous)) and PB357. Neratinib is a potent irreversible tyrosine kinase inhibitor that blocks signal transduction through the epidermal growth factor receptors, HER1, HER2 and HER4. Currently, the Company is primarily focused on the development of the oral version of neratinib, and its most advanced drug candidates are directed at the treatment of HER2-positive breast cancer. The Company believes that neratinib has clinical application in the treatment of several other cancers as well, including non-small cell lung cancer and other tumor types that over-express or have a mutation in HER2. Further information about Puma Biotechnology can be found at http://www.pumabiotechnology.com.
Forward-Looking Statements:
This press release contains forward-looking statements, including statements regarding the development of the Companys drug candidates. All forward-looking statements included in this press release involve risks and uncertainties that could cause the Company's actual results to differ materially from the anticipated results and expectations expressed in these forward-looking statements. These statements are based on current expectations, forecasts and assumptions, and actual outcomes and results could differ materially from these statements due to a number of factors, which include, but are not limited to, the fact that the Company has no product revenue and no products approved for marketing; the Company's dependence on PB272, which is still under development and may never receive regulatory approval; the challenges associated with conducting and enrolling clinical trials; the risk that the results of clinical trials may not support the Company's drug candidate claims; even if approved, the risk that physicians and patients may not accept or use the Company's products; the Company's reliance on third parties to conduct its clinical trials and to formulate and manufacture its drug candidates; the Company's dependence on licensed intellectual property; and the other risk factors disclosed in the periodic and current reports filed by the Company with the Securities and Exchange Commission from time to time, including the Company's Annual Report on Form 10-K for the year ended December 31, 2016. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company assumes no obligation to update these forward-looking statements, except as required by law.
Go here to read the rest:
Puma Biotechnology Presents Interim Results of Phase II CONTROL Trial of PB272 in Extended Adjuvant Treatment of ... - Business Wire (press release)
- Is Weakness In Bloomage BioTechnology Corporation Limited (SHSE:688363) Stock A Sign That The Market Could be ... - Simply Wall St - March 28th, 2024
- Insiders were the biggest winners as Beijing Bohui Innovation Biotechnology Group Co., Ltd.'s (SZSE:300318) market ... - Simply Wall St - March 28th, 2024
- Biotechnology CEO and inventor of SiriusXM Satellite Radio Martine Rothblatt to deliver graduation address to the ... - EurekAlert - March 28th, 2024
- 6 biotechnology universities in the UK leading the way for future talent - Labiotech.eu - March 28th, 2024
- Is Vera Therapeutics Inc (VERA) a Bad Choice in Biotechnology Wednesday? - InvestorsObserver - March 28th, 2024
- Is G1 Therapeutics Inc (GTHX) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - March 28th, 2024
- The three-year underlying earnings growth at Anhui Anke Biotechnology (Group) (SZSE:300009) is promising, but the ... - Simply Wall St - March 28th, 2024
- Is Lyra Therapeutics Inc (LYRA) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - March 28th, 2024
- Should You Sell 4D Molecular Therapeutics Inc (FDMT) in Biotechnology Industry? - InvestorsObserver - March 28th, 2024
- SPMVV receives 47.9 lakh grant from the governments Department of Biotechnology - The Hindu - March 28th, 2024
- Where Does IGC Pharma Inc (IGC) Stock Fall in the Biotechnology Field After It Is Up 14.71% This Week? - InvestorsObserver - March 28th, 2024
- Report Lays Out Road Map to Transform Understanding of RNA and Invest in RNA Science and Biotechnology - National Academies of Sciences, Engineering,... - March 28th, 2024
- Is Akebia Therapeutics Inc (AKBA) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - March 28th, 2024
- Singapore and Indonesia to foster bilateralism in healthcare, digital health, and biotechnology - BSA bureau - March 28th, 2024
- Where Does Gossamer Bio Inc (GOSS) Stock Fall in the Biotechnology Field After It Is Lower By -14.07% This Week? - InvestorsObserver - March 28th, 2024
- Where Does Equillium Inc (EQ) Stock Fall in the Biotechnology Field After It Is Down -31.25% This Week? - InvestorsObserver - March 28th, 2024
- Q5A(R2) Viral Safety Evaluation of Biotechnology Products Derived from Cell Lines of Human or Animal Origin - FDA.gov - January 14th, 2024
- An Introduction to Biotechnology - PMC - National Center for ... - January 14th, 2024
- Should You Invest in the Invesco Biotechnology & Genome ETF (PBE)? - Yahoo Finance - January 14th, 2024
- Digital Life Norway (DLN) Initiative to foster and boost transdisciplinary biotechnology research and innovation - Open Access Government - January 14th, 2024
- Is Elevation Oncology Inc (ELEV) a Bad Choice in Biotechnology Thursday? - InvestorsObserver - January 14th, 2024
- Is Cytokinetics, Inc. (CYTK) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 14th, 2024
- Is Regeneron Pharmaceuticals Inc (REGN) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 14th, 2024
- Is Axsome Therapeutics Inc (AXSM) a Good Buy in the Biotechnology Industry? - InvestorsObserver - January 14th, 2024
- Where Does Immunovant Inc (IMVT) Stock Fall in the Biotechnology Field After It Is Higher By 11.63% This Week? - InvestorsObserver - January 14th, 2024
- Should Biotechnology Stock Harpoon Therapeutics Inc (HARP) Be in Your Portfolio Wednesday? - InvestorsObserver - November 24th, 2023
- Should Biotechnology Stock SpringWorks Therapeutics Inc (SWTX) Be in Your Portfolio Wednesday? - InvestorsObserver - November 24th, 2023
- Where Does Cassava Sciences Inc (SAVA) Stock Fall in the Biotechnology Field After It Has Fallen -1.24% This Week? - InvestorsObserver - November 24th, 2023
- Where Does Kalvista Pharmaceuticals Inc (KALV) Stock Fall in the Biotechnology Field After It Is Lower By -1.04% This Week? - InvestorsObserver - November 24th, 2023
- Should Biotechnology Stock Theravance Biopharma Inc (TBPH) Be in Your Portfolio Thursday? - InvestorsObserver - April 23rd, 2023
- Where Will Sana Biotechnology Inc (SANA) Stock Go Next After It Is Down 1.35% in a Week? - InvestorsObserver - April 23rd, 2023
- Where Does Novo Nordisk A/S (NVO) Stock Fall in the Biotechnology Field After It Has Fallen -1.71% This Week? - InvestorsObserver - April 23rd, 2023
- Where Does Seagen Inc (SGEN) Stock Fall in the Biotechnology Field After It Is Lower By -0.81% This Week? - InvestorsObserver - April 23rd, 2023
- MSc Admissions at Institute of Bioinformatics and Applied Biotechnology, Bengaluru - Mathrubhumi English - April 23rd, 2023
- What is Biotechnology? Definition, Types and Applications | TechTarget - March 28th, 2023
- Biotechnology - Applications of biotechnology | Britannica - March 28th, 2023
- Biotechnology | FAO | Food and Agriculture Organization of the United ... - March 28th, 2023
- What is Biotechnology? Types and Applications - Iberdrola - March 28th, 2023
- Should Biotechnology Stock Checkpoint Therapeutics Inc (CKPT) Be in Your Portfolio Monday? - InvestorsObserver - March 28th, 2023
- Where Does IGM Biosciences Inc (IGMS) Stock Fall in the Biotechnology Field After It Has Fallen -1.80% This Week? - InvestorsObserver - March 28th, 2023
- Is Day One Biopharmaceuticals Inc (DAWN) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - March 28th, 2023
- Where Does Jasper Therapeutics Inc (JSPR) Stock Fall in the Biotechnology Field After It Has Risen 3.16% This Week? - InvestorsObserver - March 28th, 2023
- Is Evaxion Biotech A/S - ADR (EVAX) a Leader in the Biotechnology Industry? - InvestorsObserver - February 14th, 2023
- Where Does Oncolytics Biotech Inc (ONCY) Stock Fall in the Biotechnology Field After It Has Risen 1.72% This Week? - InvestorsObserver - February 14th, 2023
- Where Does Surrozen Inc (SRZN) Stock Fall in the Biotechnology Field After It Is Up 59.74% This Week? - InvestorsObserver - February 14th, 2023
- International Biotechnology Trust's Investment Manager to Focus on Core Healthcare Business - Marketscreener.com - February 14th, 2023
- Where Does Ocugen Inc (OCGN) Stock Fall in the Biotechnology Field After It Is Lower By -14.73% This Week? - InvestorsObserver - February 14th, 2023
- Is Protagonist Therapeutics Inc (PTGX) a Smart Choice in Biotechnology Friday? - InvestorsObserver - February 14th, 2023
- Where Does Kiora Pharmaceuticals Inc (KPRX) Stock Fall in the Biotechnology Field After It Has Risen 33.24% This Week? - InvestorsObserver - February 14th, 2023
- Where Does Novavax Inc (NVAX) Stock Fall in the Biotechnology Field After It Is Up 0.46% This Week? - InvestorsObserver - February 14th, 2023
- City of Vacaville Introduces Next Generation to Biotechnology and Advanced Manufacturing - Financial Post - February 6th, 2023
- Is Incyte Corporation (INCY) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - February 6th, 2023
- Where Does Catalyst Pharmaceuticals Inc (CPRX) Stock Fall in the Biotechnology Field After It Is Down -3.88% This Week? - InvestorsObserver - February 6th, 2023
- Where Does Summit Therapeutics Inc (SMMT) Stock Fall in the Biotechnology Field After It Is Up 8.63% This Week? - InvestorsObserver - February 6th, 2023
- Where Does Compass Therapeutics Inc. (CMPX) Stock Fall in the Biotechnology Field After It Is Down -2.89% This Week? - InvestorsObserver - February 6th, 2023
- Should You Be Impressed By Puma Biotechnology, Inc.'s (NASDAQ:PBYI) ROE? - Simply Wall St - January 21st, 2023
- Where Does Palisade Bio Inc (PALI) Stock Fall in the Biotechnology Field After It Is Lower By -11.27% This Week? - InvestorsObserver - January 21st, 2023
- Is Autolus Therapeutics PLC (AUTL) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 21st, 2023
- Where Does Edesa Biotech Inc (EDSA) Stock Fall in the Biotechnology Field After It Has Fallen -39.16% This Week? - InvestorsObserver - January 21st, 2023
- Where Does Vaxcyte Inc (PCVX) Stock Fall in the Biotechnology Field After It Has Fallen -7.21% This Week? - InvestorsObserver - January 12th, 2023
- Where Does CytomX Therapeutics Inc (CTMX) Stock Fall in the Biotechnology Field After It Is Up 61.68% This Week? - InvestorsObserver - January 12th, 2023
- Where Does Vyant Bio Inc (VYNT) Stock Fall in the Biotechnology Field After It Is Up 36.36% This Week? - InvestorsObserver - January 12th, 2023
- Is CTI BioPharma Corp (CTIC) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 12th, 2023
- Where Does Jaguar Health Inc (JAGX) Stock Fall in the Biotechnology Field After It Has Gained 22.22% This Week? - InvestorsObserver - January 12th, 2023
- Where Does Geron Corporation (GERN) Stock Fall in the Biotechnology Field After It Has Gained 9.09% This Week? - InvestorsObserver - January 12th, 2023
- Is OncoSec Medical Inc (ONCS) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 12th, 2023
- What is Biotechnology? Master of Biotechnology - January 4th, 2023
- Where Does Chemomab Therapeutics Ltd - ADR (CMMB) Stock Fall in the Biotechnology Field After It Has Gained 52.97% This Week? - InvestorsObserver - January 4th, 2023
- Should Biotechnology Stock Galera Therapeutics Inc (GRTX) Be in Your Portfolio Wednesday? - InvestorsObserver - January 4th, 2023
- Where Does 180 Life Sciences Corp (ATNF) Stock Fall in the Biotechnology Field After It Is Lower By -26.07% This Week? - InvestorsObserver - January 4th, 2023
- Is Adaptive Biotechnologies Corp (ADPT) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 4th, 2023
- Is ImmunoGen, Inc. (IMGN) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 4th, 2023
- Is DBV Technologies SA - ADR (DBVT) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - January 4th, 2023
- Does PDS Biotechnology Corp (PDSB) Have What it Takes to be in Your Portfolio Wednesday? - InvestorsObserver - December 27th, 2022
- Where Does Intercept Pharmaceuticals Inc (ICPT) Stock Fall in the Biotechnology Field After It Is Lower By -10.50% This Week? - InvestorsObserver - December 27th, 2022
- Where Does Merrimack Pharmaceuticals Inc (MACK) Stock Fall in the Biotechnology Field After It Has Fallen -10.39% This Week? - InvestorsObserver - December 27th, 2022
- Where Does Compass Therapeutics Inc. (CMPX) Stock Fall in the Biotechnology Field After It Is Higher By 2.68% This Week? - InvestorsObserver - December 27th, 2022
- Where Does Allogene Therapeutics Inc (ALLO) Stock Fall in the Biotechnology Field After It Is Lower By -19.38% This Week? - InvestorsObserver - December 27th, 2022
- Where Does Oramed Pharmaceuticals, Inc. (ORMP) Stock Fall in the Biotechnology Field After It Is Higher By 11.42% This Week? - InvestorsObserver - December 27th, 2022
- Is Calithera Biosciences Inc (CALA) Stock at the Top of the Biotechnology Industry? - InvestorsObserver - December 27th, 2022