21 December 2007

VERSION:  1 2 3 4 5 6 7 8 9

 

Lantus vs. Byetta

A recombinant human insulin analog (Lantus) vs. exenatide (Byetta) as add on therapy to oral agents ( 2-3 from Glucophage, SU, TZD)  in patients with suboptimal control of type 2 diabetes (baseline hemoglobin A1C greater than 7.5 but less than or equal to 11.

 

Sponsor: Sanofi-Aventis

Study Drug: Lantus

Comparator:  Byetta

Protocol:

Phase:  III

CRO:  Quintiles

Site #:

Screening #

CRA: 

Medical Monitor: 

Study Ends Recruitment: 

Central Lab: 

Central EKG:

Central IRB:

554 Subjects / 120 Sites → 5 Subjects per Site R

 

IC

Age: 18-79

Type 2 DM

2-3 Drugs Stable x 3 months (SU, Glucophage, TZD)

HgbA1C ≥ 7.5 to ≤ 11.0

BMI < 42

 

EC

Starlix, Prandin, Glyset, Byetta, Januvia or similar drug x 3 months

CKD with Creatinine Men:  ≥ 1.5 AND Women: ≥ 1.4

Any weight loss drug x 3 months

 

 

21 December 2007

VERSION:  1 2 3 4 5 6 7 8 9

 

Lantus vs. Byetta

 

V1   W -1 to -2   Lab, Screen, EKG

V2   W  0             Lab, R

V3   W  4            Lab    

V4   W  8            Lab

V5   W  16         Lab

V6   W  24          Lab, Early Term.

V7   W 25-26      F/U Phone Call

       

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21 December 2007

VERSION:  1 2 3 4 5 6 7 8 9

 

Lantus vs. Byetta

 

Questions

  1. Indemnification: The sponsor likes to be held harmless for acts of negligence that the PI commits that are solely the error of the treating physician. For example, if a PI treats a subject's UTI during a study and the patient suffers an injury from this, it is squarely the PI’s fault and it would not be proper for the sponsor to sustain an injury by being held liable for it. However, we are aware of a BP study where the PI followed the protocol and had the subject wash off their BP medication and suffer a stroke from the lack of the proper BP treatment. The sponsor forced the PI to use his medical malpractice insurance to satisfy the claim for medical malpractice. Clearly, this was an injustice as the PI was following the protocol precisely and even though it is unusual for a stroke to occur during wash out, it certainly does not immunize the subject from having a stroke. When a stroke occurs during wash out it is important that the sponsor take responsibility for the liability. This should be true of any injury ex officio of changing a subject’s treatment while following the protocol. If this drug causes respiratory depression, are you going to be fully liable?
  2. Study Fully Populated Causing Premature Early Termination: As sites advertise for patients to become research volunteers, the people that are good enough to step forward to join, wash off of their existing treatment, come to our site and devote a significant amount of their time with blood draws, signing paperwork and allowing the experimental protocol to progress, should be guaranteed that the sponsor will not prematurely shut down the study because they have obtained the needed number of subjects. That is, it should be the sponsor’s responsibility to do the number crunching early enough not to allow subjects to sign consent and undergo early termination just because the study is now considered full enough. This is not ethical or in the patients best interest. All subjects who sign consent must be allowed to continue thru the protocol if they are continuing to fulfill criteria regardless of how many subjects are in the trial.
  3. Reimbursement for Screen Failures: Sites are taking finincial risk in the name of enrolling only those subjects who will successfully complete the trial. Sponsors need to recognize that this significantly slows enrollment. When we see a subject who may qualify but then again may not, we would be hesitant to enroll in that study. Since the exclusivity clock starts clicking as soon as the drug is patented it is imperative that the studies are done as quickly as possible. Sites that are rewarded for each piece of work they legitimately perform will have to enroll better. Sites with too high screen failure rates can be turned off to ensure the proper motivation to enroll high quality subjects is present.
  4. Initial Fasting Labs and Informed Consent: Many trials have visit one with fasting labs and signing informed consent on the same day. This is less desirable than having a visit one where the subject presents non-fasting for the purpose of signing the informed consent form and having the study discussed with them. The potential problem is with a diabetic. If a diabetic patient answers an ad and presents fasting for visit one, a research related procedure was done prior to signing the ICF (Informed Consent Form). They could get a low sugar reaction while driving to the site and suffer an MVA. They may also feel pressured to sign the ICF quickly as they know when the do so they will finally get something to eat. This can be most safely avoided by allowing subjects to sign the ICF on a pre-visit one or by writing protocols that don't have fasting labs as a visit one procedure. Although I understand V1 labs are non-fasting for this trial.
  5. Recruitment: Too often recruitment is an oversight thought to be the sites problem dealt with at a time other than the beginning of the trial. It becomes the sponsor’s problem after many sites under enroll. Wise sponsors address recruitment up front at the investigator’s meeting and include recruitment agencies. One budget neutral solution is for the sponsor to push to make available an IRB approved ad for those using the central IRB at the very beginning of the trial. In addition use of centralized recruitment agencies like Pi and Acurian can very useful and cost effective. All our databases could be larger. A small minority of people step forward to become research subject volunteers. Planning for recruitment issues at the beginning is much better than catch up at the end.

 

 

Investigator Meeting:  Maui