Showing posts with label RMC. Show all posts
Showing posts with label RMC. Show all posts

Wednesday, December 30, 2009

Can Cache Valley Virus Trash Your Manufacturing?

By Dr. Ray Nims

Cache Valley virus is a single-stranded RNA virus of family bunyavirus, genus Bunyavirus. It is enveloped and nominally 80-120 nm in diameter. Cache Valley virus was first isolated in Utah in 1956 and is carried by mosquitoes. It has since been found to be a widespread virus, having been isolated in Texas, Michigan, North Carolina, Indiana, Virginia and Maryland, for example.



source: Nims et al., BioPharm. Int. 21: 89-94, 2008

Basis of Concern. Cache Valley virus is known to infect livestock, causing birth defects. There have been two reports of encephalitic disease in humans attributed to Cache Valley virus. This virus has been isolated from biologics manufacturing processes employing Chinese hamster cell substrates on a number of occasions from 2000 to 2004 (Nims et al., BioPharm. Int. 21: 89-94, 2008). The route of entry of the virus into biologics production processes has not been established with certainty, although the use of contaminated bovine serum is considered to be the most likely source. Thus far the virus has only been known to infect manufacturing processes employing bovine serum.

Regulatory Expectations. Cache Valley virus is not mentioned specifically in any regulatory guidance, as the detection of this virus in biologics production has been reported only within the past decade. It is the intent of the guidance, however, that occurrences of viral contamination in biologics manufacturing be dealt with through implementation of specific testing methods as required to assure detection of future recurrences (e.g., ICH Q5A R1). In addition, it is expected that the route of entry of the virus be established and that the process be remediated so that future recurrences are prevented where possible (e.g., 1997 Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for Human Use).

Mitigating Risk. Although many Contract Testing laboratories offer rapid nucleic acid-based detection assays for Cache Valley virus, raw material screening for this virus using such assays does not appear to be a viable means of eliminating risk. The industry experience thus far indicates that Cache Valley virus may be a low level, non-homogeneous contaminant of bovine serum. Viral screening performed on one bottle out of a large lot of serum therefore is no guarantee that this virus will not be encountered. Elimination of animal-derived materials (esp. bovine serum) from the manufacturing process may help to reduce the risk of experiencing this virus. Should this not be possible, treatment of the serum or serum-containing media should be considered. Gamma-irradiation has been demonstrated to be effective in inactivating this virus in bovine serum (Gauvin, 2009). UVC treatment of media containing bovine serum also appears to be quite effective at inactivating Cache Valley virus (Weaver, 2009).

Conclusions. Cache Valley virus infects livestock and has been found to contaminate biologics manufacturing processes employing bovine serum. It is a virus of concern for biologics manufacturers employing bovine serum which has not been gamma-irradiated. Risk of infection of biological products with Cache Valley virus through use of bovine serum may be mitigated through implementation of gamma-irradiation of the serum, or UVC- or high-temperature short-time (HTST) treatment of media containing the serum and of viral purification processes capable of removing and inactivating enveloped viruses.

Wednesday, June 3, 2009

Ten Steps to Choosing your Contract Manufacturer

For many young companies, choosing a contract manufacturer, or CMO, for their lead pharmaceutical candidate is critical. Choose the wrong contractor, and you could be faced with delays and cost overruns with which your investors and patients won’t be very sympathetic. While there is no guarantee that you will always make the right decision, here are some tips that can help you make your choice in an organized, thoughtful, meaningful and objective way:

1) Make a list of all the possible suppliers. Such lists may be purchased, but they are also easily assembled from internet searches. In fact, you can do a little pre-screening with your own internet search.

2) Screen potential suppliers with a phone call. You will probably speak with a business development or sales person representing the contractor, but usually these people are quite knowledgeable about their company’s capabilities, and common problems encountered in the industry. We recommend you not reveal too many details about your project, and be prepared mostly to listen. However, you should have three or four key capabilities or proficiencies that you are looking for in all of the potential vendors. If possible, try to rule out vendors who do not meet your “must-have” requirements at this stage. Stay tuned for a blog on how to establish your showstopper list, it’s a critical exercise, and may extend beyond key capabilities and proficiencies.

3) Keep a matrix, and record the date you first contacted the vendor, when they responded to you, the status of any confidentiality agreements, and all the contact information that you can gather (email addresses, cell phone numbers, main switchboards and extension numbers). Also note the responses that each contact had relative to your three or four show-stopper criteria.

4) Meet with your team, and select three to five potential vendors to request a proposal from. We don’t recommend more than five: getting good, comparable proposals is a lot of work, like 2n times the work, where n = the number of proposers. Not to mention the work that contract manufacturers go through to read your RFP and prepare a proposal. Your three or four showstopper criteria should help you limit the number of proposers; if necessary you can begin to narrow down based on “nice-to-have” criteria as well. You may also deliberately choose to look at a range of vendors that represent different strengths/weaknesses (for example, do you prefer a “one-stop shop” that is convenient, but maybe not the best at everything, or a “specialty” vendor that provides higher levels of expertise, but will require you to select and manage multiple vendors?).

5) Solicit proposals. Most contract manufacturing seekers have a Request for Proposals (RFP) process that includes a document. These RFP documents vary from one page requirements descriptions, to lengthy, legalistic documents that require a team, and a month, to respond to. You should do what is comfortable for your organization. There needs to be enough information so that the vendor is able to respond with a meaningful proposal. There is some legal danger, particularly with intellectual property, so it’s not a bad idea to get your RFP reviewed by your legal counsel. And you should only send an RFP to a vendor after they have signed a mutually agreed confidentiality agreement.

6) Score your proposals. Find some basis to make apples to apples comparisons. RMC uses a modified Kepner Tregoe analysis, but many forms of analysis will work. You should have determined how you will assess and weight qualitative data before you begin. And in doing so, you should not under-estimate intangible factors: the ability to communicate, time zone differences, good references (you’ve checked, right?) are some examples. At this stage you should be ranking and scoring on “nice-to-have” criteria as well as comparing cost/timeline, capabilities, capacity, and viability of the business. You might form your opinion of the viability of the business by reading annual reports and press releases, and by assessing how busy the manufacturing area and support labs look during your visit.

7) Visit the top two or three vendors in person. Vendors may not allow a formal quality audit prior to signing a contract, but be sure to bring your quality representatives even for an informal “technical visit”. If the project is large, you may take the resistance to a pre-use quality audit as a red flag. Again, spend as much time as possible listening, rather than talking. Get a tour, and copies of all presentations. Ensure that you have a meeting between the decision makers for both sides as well as aligning discussions between key technical and quality personnel. If there are disputes or further work to do, your decision makers must have a good working relationship.
Your visit is also your best opportunity to break past the business development group and take a true measure of the business. Chat with the people in the lab or production area if you can. Look over the state of the equipment, the cleanliness of the facility and the stock in the warehouse. Check their flexibility-- what can they make happen for you, vs. what will have to be run past someone in another building, or another city? Ultimately, you should think about hiring a contract manufacturer similarly to how you hire an employee, by hiring for expertise as well as fit with your team.

8) Consider entering contract negotiations with at least two vendors. Things can go wrong in negotiations, and your position is stronger if you can legitimately walk away. We typically don’t let any of the final three candidates off the hook until the ink is dry on the final contract. If your budget can justify it, having a second contractor performing development work and verifying the primary contractor’s results is an excellent idea. It may ultimately spread your risk in supply chain, and give you leverage in negotiating commercial supply agreements later on.

9) Revisit your analysis tool. You may learn new things in your contract negotiations that cause you to adjust your evaluation. Don’t be afraid to be frank if you feel like terms have been changed since the selection was made. This is a good reason to keep a back up vendor.

10) You must now manage the project according to the criteria by which you selected your supplier. Hold your supplier and yourself accountable to these criteria. For example, after selecting a vendor because they can meet a very aggressive timeline, do not put the project timeline at risk by failing to order back up critical path supplies, in case the primary order doesn’t arrive, or fails to meet specifications on arrival. We will have more to say about managing a contract manufacturer in a future blog.

Choosing the right manufacturing partner is critical for your success as a drug developer. Spend the time required to make a good decision. This time should be spent gleaning as much tangible and non-tangible information on all your options as possible, and then objectively comparing it. You should have an idea about how you’re going to evaluate and weight non-tangible factors into your decision. And once you have made the choice, manage according to your criteria. Although everyone has their own methods for vendor selection, these are some suggestions that have worked well for us and our clients. If you have questions or comments, please visit http://www.rmcpharma.com/ or email us at info@rmcpharma.com.