Prohost Letter #405 Synthetic Biology (3) We have already decided upon becoming shareholders the day synthetic biology firm called Synthetic Genomics turns public. We reiterate that firms specialized in synthetic biology are numerous private and publicly traded. Some are promising, others are walking in place and a few have plummeted. With the general underperformance of synthetic biology stocks, many shareholders abandoned ship. Investors felt that …

Exelixis (EXEL) announced a new collaboration with Roche on a phase 1b dose escalation study of a combination of Exelixis cabozantinib in combination with Roche’s anti-PD-L1 immuno-therapy drug atezolizumab. The study aims at evaluating the safety and tolerability  of the combination in patients with locally advanced or metastatic solid tumors. Enrollment is scheduled to begin mid-year 2017. Exelixis will sponsor the trial, and Roche will …

Watching the outperformance of the new approaches for cancer immunotherapies, especially the checkpoint inhibitors and other immunotherapy successful attempts, oncologists recognized that the ultimate efficacy of empowering the immune system to fight cancer will be reached when immunotherapy products are combined with other suitable products. In this respect, researchers and oncology specialists seem to believe that targeted therapeutics could be among the most fitting products …

Prohost Letter #404 Part 2 Synthetic Biology (2) A Brief History DNA is the software of life. This is how Synthetic Genomics firm, which we believe is now is the leading biotech firm for applied synthetic biology. Synthetic Genomics is still a private firm in spite of that thousands of investors are impatiently waiting for it to turn public and it will. So stay tuned. …

It seems that the global Takeda (TKPYY) has guessed well what it should pick in order to bring the most effective targeted treatments to cancer patients allover the globe. Cancer management has unreservedly changed. What seems now to have become the best treatment choices are those that would accommodate the new wave of extremely promising immunotherapy approaches. To reach its ultimate success, immunotherapy drugs require …

Prohost Letter #402 Antisense Proof of Concept and Feasibility EYE ON INVIVA (INVA) Sales of The Ellipta Inhalers Started to Pick up AND ON THERAVANCE BIOPHARMA (TBPH) See Below AND WE WILL NOT LOSE FOCUS ON ARIAD (ARIA), EXELIXIS (EXEL), ARRAY (ARRY), PORTOLA (PTLA), NEKTAR (NKTR), THERAVANCE BIOPHARMA (TBPH), INVIVA (INVA), MERCK (MRK) AND SEE THE TABLES IONIS (IONS) The . . . This content is for paid …

Prohost Letter #400 NEAR-­TERM INVESTING The Prohost Letter #399 Part 3 has Promised to Des

EXELIXIS APPROVED PRODUCTS 1. CABOMETYX™(CABOZANTINIB) For Exelixis (EXEL) the two approved oncology products cabozantinib and cobimetinib and its pipeline of promising investigational products are considered now by more analysts a wealth that will be reflected in the firm’s future growth. The results emanating from the clinical trials of two approved products should not be underestimated. The latest of the good news emanated from the firm’s …

EXELIXIS (EXEL) Friends and subscribers are asking the following question for more than two weeks now: Why EXEL stock has rallied? Most of those who asked the question owned the stock and made a lot of profit on it. The truth is that those investors wanted to know whether it was time for them to take their profit and enjoy it elsewhere. In other words; …

Additional data from pivotal METEOR trial underscore clinically meaningful benefit of Exelixis’ (EXEL) drug Cabometyx™ for patients with Advanced RCC AT the ASCO Meeting: ABSTRACT #4557, #4558 Cabometyx’™ benefit was robust and consistent regardless of prior treatment, location and extent of tumor metastases Positive data will be presented at the 2016 American Society of Clinical Oncology (ASCO) from subgroup analyses of the pivotal METEOR trial. …

Yes, indeed, the good news has come from the randomized CABOSUN phase 2 trial with Exelixis’ (EXEL) drug cabozantinib. The news is indirectly telling us that Cabozantinib may soon become the first-line treatment for previously untreated advanced renal cell carcinoma (RCC). We say that because the randomized CABOSUN trial that was conducted on advanced renal cell carcinoma patients who have not been treated before has shown a …

CANCER Everyday something new is discovered that explains cancer behavior, including proliferation, response to treatment, resistance to treatment, metastasis, recurrence, etc. Today we have several news, including one that might have cleared a puzzle regarding a continuous growth of colon cancer after oncologists block a well known signaling molecule recognized as playing a major role in making, not breaking the cancer. We also have news …

Underestimating the Value of Drugs that Disrupt the DNA Repair Mechanisms in Cancer Cells. AstraZeneca’s (AZN) Chief Executive Pascal Soriot said that while DNA damage response was under-recognized by investors, oncologists were already “very excited” by its potential of the drugs targeting DNA repair mechanisms inside cancer cells. According to AstraZeneca, drugs that disrupt the DNA repair mechanisms inside cancer cells are showing tangible promise for …

EXELIXIS AGAIN They said: Sell EXEL, as no partner is interested in the firm’s FDA approved cabozantinib to date. What really happened: It did not take long for IPSEN to come forward and take the responsibility of marketing cabozantinib abroad and pay $200 million upfront payment to Exelixis. They said: Although the FDA approved Cabometyx (cabozantinib) for advanced renal cell carcinoma (RCC), the drug will …

Biotech NEWS   AGENUS Agenus’ First Checkpoint Inhibitor to reach Clinical Trial The first patient has been dosed in Agenus (AGEN) Phase 1 clinical trial of its checkpoint inhibitor product AGEN1884. The open-label, multicenter trial in patients with advanced or refractory cancer is designed to evaluate the safety of AGEN1884 and determine the estimated maximum tolerated dose. AGEN1884 is an anti-CTLA-4 (cytotoxic T-lymphocyte antigen-4) checkpoint …

Congratulations.   The FDA approved Exelixis’ (EXEL) drug Cabometyx™ (cabozantinib) tablets for advanced renal cell carcinoma (RCC) patients who have received prior anti-angiogenic therapy. RCC is the most common form of kidney cancer in adults. Cabometrix is the first drug to demonstrate robust and clinically meaningful improvements in a phase 3 trial in patients with advanced RCC. The drug satisfied all key efficacy parameters — …

Prohost Letter #393 IMMUNOTHERAPY - PROHOST PORTFOLIO - NEW PICKS? - A Brief Reminder of the CAR T –TCR Immunotherapy Approaches In this issue we continue our journey inside the territory of cancer immunotherapy. We remind that in the Prohost Letter issue #391, we dealt with the immunotherapy based on genetically engineered T Cells, enabling them to seek out, attack and neutralize cancer cells. The immune system’s T …

Exelixis’ (EXEL) quarterly results beat analysts’ expectations, which was the least of our concerns. The details of the firm’s actions during the past year, however, confirmed our conviction that the recently approved products will be taken care of responsibly by the firm that created them and believed in them against all pessimistic opinions. Indeed, more important than the firm’s current revenues and spending was the firm’s ability …

Prohost Letter #392 February 28, 2016 - How could it be possible for any genius to make intelligent guesses about the market's next moves when highly regarded experts, including Nobel Prize winners in economics, remained quizzical about the recent horrifying performances of publicly traded stocks? Since the beginning of 2016, the stock market has been made to look as if a runaway train with many passengers …

EXELIXIS Good News about CABO The FDA has determined that Exelixis’ (EXEL) cabozantinib New Drug Application (NDA) for advanced renal cell carcinoma (RCC) to be sufficiently complete to permit a substantive review. The NDA will be considered officially filed 60 days from the date of the completion of the submission, or February 20, 2016. The FDA granted Priority Review to the filing and assigned a Prescription Drug User …