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U.S. regulators have delayed a decision on approval of an antibiotic from Johnson & Johnson and Basilea saying they need further audits of clinical sites, the two companies said on Wednesday.

Ceftobiprole, a broad-based spectrum antibiotic targeted mainly against infections caused by methicillin-resistant Staphylococcus aureus (MRSA), is Basilea's lead product and the news hit the Swiss biotech shares, which plummeted 27 percent.

In a so-called complete response letter on the drug's approval application, for complicated skin and skin structure infections, the Food and Drug Administration (FDA) said it was unable to review the clinical data submitted with the NDA until issues of data integrity had been resolved. The FDA has asked J&J to conduct additional audit work of clinical investigator sites and to address specific questions related to site monitoring."

Ceftobiprole is approved in Canada and Switzerland and has been recommended for approval in the European Union. A new application in the United States is planned within a year.

Late last week, FDA rejected an NDA for another antibiotic, iclaprim, being developed by Arpida, another Swiss company. It has been a bad two weeks at FDA for approval of new antibiotics—drugs that we desperately need.

Until next time….

Happy Thanksgiving

 

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A Food and Drug Administration (FDA) advisory panel Thursday rejected a proposed antibiotic by Arpida Ltd. (ARPN.EB) to treat serious skin infections, a Food and Drug Administration spokeswoman said. The rejection was expected because results from Phase III clinical trials showed that patients taking iclaprim (a trimethoprim-like antibiotic) had lower cure rates than Pfizer's Zyvox (linezolid) which was used as a comparator antibiotic in the studies.

The panel voted 17 to 2 against a question that asked whether the data presented demonstrated the safety and effectiveness of iclaprim for the treatment of skin infections. Although FDA isn’t required to follow the advice offered by its advisory panels, the agency typical follows the panels’ recommendations. This means that it is unlikely that FDA will approve iclaprim to treat complicated skin and soft structure infections (cSSIs).

This is bad news for Arpida Ltd, a small, Swiss biopharmaceutical company and Americans with cSSIs infections that are caused by  multiple drug resistant bacteria.

Until next time…

Good Luck and Good Job Hunting!!!!!! 

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Pfizer announced today that it would withdraw marketing application being considered at FDA and the European Medicines Agency (EMEA) for Dalbavancin an antibiotic it was developing for complicated skin infections caused by bacteria including methicillin-resistant Staphylococcus aureus (MRSA).

Pfizer acquired Dalbavancin after it purchased California-based Vicuron Pharmaceuticals for $1.9 billion in 2005. At that time, Vicuron had filed an NDA with FDA and had expected approval for the novel antibiotic. Instead, after acquiring Vicuron, Pfizer received an approvable letter from FDA that requested additional studies before the agency would approve the drug. Based on the agency’s comments, Pfizer decided to withdraw the original US and European applications filed by Vicuron and conduct addition Phase III clinical trials for the complicated skin and soft tissue infection and pediatric indications. I suspect that results from these trials will determine whether Pfizer files new applications with FDA and EMEA for Dalbavancin.

For those of you who may not know, Vicuron Pharmaceuticals was formerly called Versicor, a company founded by Eric Gordon, Mickey Gorman and others. In 1996, I was recruited to interview for a Vice President of Biology position at the company.  At that time, Versicor had about 15 employees — Eric was CEO and Mickey was a consultant.  Although Eric, Mickey and I became fast friends, I didn’t get the job (they never hired anybody for the position). 

Both Eric and Mickey left Versicor a couple of years later. Eric went on to start Sunesis, a very successful Bay area oncology company and Mickey retired to his home in Key West, FL. From time to time, I would run into Eric at BIO meetings and Mickey and I would meet up at my all time favorite Vietnamese restaurant (Hy Vong) in Little Havana in Miami, FL. Eric has since retired after 30 years in the pharma/biotech biz and Mickey unfortunately passed away from cancer in the early 2000s.

 

After meeting Eric and Mickey, I knew that Versicor would be a success one day—the $1.9 billion that Pfizer paid for Vicuron tends to validate that notion. While I didn’t benefit financially from Versicor, I was lucky and fortunate to meet two, really smart, fascinating and genuine individuals who helped me to establish my credibility in the biopharmaceutical industry.  As the saying goes “Money isn’t everything!”

 

Hat tip to Ed at Pharmalot.

 

Until next time…

 

Good Luck and Good Job Hunting!!!!!

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A friend of mine accidentally gashed his leg on an open dishwasher door and thought nothing of it for several weeks until he noticed that the wound wasn’t healing and it hurt really badly. He eventually went to the emergency room at a local, where the ER docs cultured the wound and sent him home with a prescription for oral antibiotics. The antibiotics stopped working several days later and he wound up in another local hospital–this time he was admitted and the spent the next 5 days on a variety of intravenous antibiotics. Despite the treatment (they could not find the right antibiotic combination at first because  they never recultured the wound) his leg turned black from his ankle to his knee and they almost had to amputate. He is back at home now and will be treated with a regimen of iv antibiotics for the next 6 weeks or so. I talked with him last week and I learned that his leg wound is still not completely healed and the infectious disease docs are worried!

My friend almost lost his leg because of a lack of understanding about bacterial infections and antibiotic resistant bacteria and— unfortunately— because of substandard wound care treatment. With this in mind, I am posting what I think are useful tips (from the June issue of the Mayo Clinic Women’s Health Source) about how to prevent, manage and treat wound infections to minimize the emergence and spread of multiple, antibiotic- resistant bacteria.

• Wash your hands: This simple procedure, done properly, remains the best defense. Carry alcohol-based hand sanitizers for times when hand washing isn’t possible.
• Keep personal items personal: Don’t share towels, soap, sheets, razors, clothing or athletic equipment.
• Sanitize linens: If you have a cut or abrasion, wash towels and sheets with hot water and added bleach. Wash gym and athletic clothes after each use.
• Get infections tested: If an infection requires treatment, ask your care provider to take a culture to confirm what bacteria are present before you are given an antibiotic. (Editor’s note: Unfortunately, this is no longer standard practice—most infections are treated empirically which is partly responsible for the increasing frequency of antibiotic resistant bacteria.) If you test positive for a Staphylococcus (Staph) infection, ask that a culture be tested specifically for MRSA in case you need a special antibiotic.
• Use antibiotics appropriately: When you take antibiotics, take all doses even when you start feeling better. Don’t demand antibiotics for viral illnesses; antibiotics don’t work with viruses. Taking too many antibiotics over time could become a detriment because the medication’s effectiveness can be compromised by overuse.
• Use antibacterial products sparingly: Antibacterial soaps and cleaning products probably don’t prevent infections at home and may make these products less effective in hospitals.
• Take precautions in the hospital: Ask all hospital staff and visitors to wash their hands or use an alcohol-based hand sanitizer before touching you. Ask care providers to wipe stethoscopes and other equipment with alcohol. Don’t set food or utensils directly on tables or beds. Make sure that intravenous tubes and catheters are inserted under sterile conditions.

I hope that these tips will help to keep you out of the hospital with potentially life-threatening, antibiotic resistant bacterial wound infections!

Until next time….

Good Luck and Good Job Hunting!!!!!!!!!

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Novartis announced today that it intends to purchase Malvern, PA-based Protez Pharmaceuticals for $400 million. Protez is developing a novel spectrum carbapenem antibiotic that is active against variety drug-resistant Gram positive (most notably MRSA )and Gram negative bacterial pathogens. Its lead compound, PZ-601, is in Phase II human clinical testing. Protez acquired PZ-601 (formerly SMP-216601) in 2005 from Dainippon Sumitomo Pharmaceuticals.   

Novartis is buying Protez to sure up its antibacterial drug pipeline. Novartis already sells Cubicin, (manufactured by Massachusetts-based Cubist Pharmaceuticals Inc.,) in Europe and is developing other antimicrobials including Aurograb and Tifacogin to treat infections.

Like many of the newly marketed antibiotics, PZ-601 is injected and not orally bioavailable. Nevertheless, it is likely that PZ-601 will provide much needed help against the ever increasing number of drug resistant bacterial isolates. Swiss companies Basilea Pharmaceutica AG and Arpida Ltd. are also working on experimental medicines to treat MRSA.

It is not clear how the acquisition will affect Protez employees.  I suspect that most of the employees will keep their jobs except for Company officers.

Until next time…

Good Luck and Good Job Hunting!!!!!

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Basilea Pharmaceutica Ltd announced yesterday that the U.S. Food and Drug Administration issued an Approvable Letter for ceftobiprole, a first-in-class anti-MRSA broad-spectrum cephalosporin, for the treatment of complicated skin and skin structure infections including diabetic foot infections. Results from two Phase III studies involving 1600 patients with complicated skin and skin structure and diabetic foot infections showed that ceftobriprole was as effective and safe as other cephalosporin antibiotics.

The Approvable Letter indicates that the ceftobiprole application is approvable, subject to completion and assessment of clinical study site inspections; assessment of clinical and microbiological data provided but not yet reviewed; and further characterization of patients with diabetic foot infections. Ceftobiprole is currently being reviewed by regulatory authorities in Canada, the European Union and in Switzerland. The antibiotic is being co-developed and marketed with Johnson and Johnson.

Until next time…

Good Luck and Good Job Hunting!!!!!!

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The US Food and Drug Administration said Monday it still had several "outstanding issues" with televancin an antibiotic being developed by Theravance Inc and Astellas Pharma of Tokyo. to treat skin infections.

The agency had canceled an advisory committee meeting scheduled for Wednesday that was set to evaluate the drug, televancin.

In a statement, the agency said that the meeting was being canceled to "allow time for the FDA to review and resolve several outstanding issues." The FDA said it would schedule an advisory committee meeting in the future, if needed.

Televancin is a once-daily injectable antibiotic that would be used to treat skin infections, including those caused by resistant bacteria like methicillin-resistant Staphylococcus aureus (MRSA). In October the FDA issued a so-called approvable letter for televancin, suggesting it needed a re-analysis of clinical data and the resolution of manufacturing issues at a third-party manufacturer that was not specifically related to televancin. The FDA said it continues to review televancin's application but didn't give a timetable for completion of the review.

Earlier this month the FDA canceled a Feb. 28 meeting for another antibiotic, ceftobiprole that would also be used to treat skin infections. That drug is being developed by a unit of Johnson and Johnson Co. and Switzerland-based Basilea Pharmaceutica Ltd. The FDA is expected to make a decision on whether to approve ceftobriprole sometime next month.

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There has recently been an inordinate amount of press coverage about methicillin-resistant Staphylococcus aureus (MRSA) or “MERSA” as it is called on my local nightly news. As a card-carrying microbiologist, I think that it is great that the American public is finally learning about multidrug resistant bacteria and the serious public health threat that these bacteria pose. For those of you who don’t know, the incidence of MRSA (and other multidrug resistant bacteria) has been steadily rising since the early 1990s –mostly in healthcare and hospital settings (not in the general population). Not surprisingly, the recent media focus on MRSA has resulted in a lot of misinformation about MRSA strains. For example, every MRSA news clip that I have seen in past week has a school janitor in a mask, gloves and laboratory coat feverishly washing walls, desks (and even toilets) at the schools where MRSA-infected students and staff have identified. I can’t help but chuckle (after I get righteously indignant) when I see these clips because S. aureus (whether it is methicillin resistant or not) is an opportunistic pathogen that is transiently carried in the nasal passages of over 50% of all Americans! Contrary to popular belief, S. aureus does not survive for long periods outside of the human body. That said, school janitors can scrub as much as they want but they will not eliminate the natural reservoir of the organism which is the students and staff who work at the schools! Further, the organism, although infectious, is not easily transmitted from person to person–it requires direct and intimate personal contact in order for that to occur. Also, just because the organism is resistant to methicillin it doesn’t mean that there are no other antibiotics that can be used to treat MRSA infections. In fact, if diagnosed early and correctly, MRSA infections are easily treated. So, why is the news media making such a big deal about MRSA? As far as I can ascertain, people who die from bacterial infections is big news because people ARE NOT suppose to die from infections in modern medical practice. There is nothing inherently more diabolical about MRSA than other strains of S. aureus except that they are methicillin resistant. In other words, MRSA strains are not more infectious nor do they cause more serious disease than non-MRSA isolates. That said, what is noteworthy about the majority of people who have died from MRSA infections is that most of them either had limited or no access to adequate medical care. People with S. aureus infections who do not seek treatment in a timely fashion or are misdiagnosed by a poorly trained emergency room physician increase their risk of serious illness (or even death) whether the organism is MRSA or your run-of-mill S. aureus isolate. The point that I am trying to make is that MRSA strains have been around for almost a generation–what has changed is that millions of Americans no longer have access to adequate healthcare. Until we improve access to healthcare for ALL Americans, I suspect that millions more will die from otherwise treatable bacterial infections.

Until next time…

Good Luck and Good Job Hunting!!!!!!!!!!!!

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