In re Serzone Products Liability Litigation

231 F.R.D. 221, 2005 WL 2560509
CourtDistrict Court, S.D. West Virginia
DecidedSeptember 2, 2005
DocketNo. MDL 1477
StatusPublished
Cited by20 cases

This text of 231 F.R.D. 221 (In re Serzone Products Liability Litigation) is published on Counsel Stack Legal Research, covering District Court, S.D. West Virginia primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In re Serzone Products Liability Litigation, 231 F.R.D. 221, 2005 WL 2560509 (S.D.W. Va. 2005).

Opinion

[223]*223MEMORANDUM OPINION AND ORDER APPROVING SETTLEMENT AND CERTIFYING THE SETTLEMENT CLASS

GOODWIN, District Judge.

Pending before the court is the plaintiffs’ motion for final approval of class action settlement [Docket 209]. This litigation arises from allegations that Serzone, a drug used to treat depression, caused a range of physical and economic injuries among users and purchasers. On August 12, 2002, this court acquired jurisdiction over the Serzone litigation by transfer order of the Judicial Panel on Multidistrict Litigation. The case developed in discovery for over a year, and settlement discussions began in mid-2003. On October 28, 2004, the plaintiffs moved for preliminary approval of a class action settlement, which the court granted on November 18, 2004. Upon completion of notice of the settlement and submission of written comments to the court in favor of and opposed to the settlement, the court held a final fairness hearing on June 29, 2005. Having considered the entire record of submissions in this matter and the oral presentations at the final fairness hearing, I FIND that the settlement class satisfies the requirements of Rule 23(a) and Rule 23(b)(3). Moreover, I FIND that the settlement is fair, reasonable, and adequate. Accordingly, the plaintiffs’ motion for final approval of the class action settlement is GRANTED.

[224]*224I. Background

Bristol-Myers Squibb Company (BMS) developed Serzone, empirically known as nefa-zodone hydrochloride, to treat depression. In pre-market trials conducted by BMS, sixteen percent of the 3,496 patients who used Serzone had to discontinue its use because of an adverse experience, including abnormal liver function test results. The Food and Drug Administration nevertheless approved BMS’s New Drug Application for Serzone on December 22, 1994 based upon findings that Serzone met standards of safety and efficacy as a treatment for depression.1 BMS began commercial sales of Serzone on March 15, 1995. Serzone’s initial label had standard warnings as to the various potential side effects that had been reported during pre-market trials. The label listed hepatitis as a “rare” adverse event and abnormal liver function as an “infrequent” event.

In 1998, following reports of additional problems, BMS submitted an application to the FDA to revise Serzone’s label to state that BMS had received “rare reports of liver necrosis and liver failure, in cases leading to liver transplantation and/or death.” BMS investigated the causal association between Serzone and liver failure by conducting two studies — one in 1999 and 2000 and another in 2000 and 2001. The 1999-2000 study found no incidence of liver failure in approximately 30,000 patient years of Serzone use. The 2000-2001 study did not find Serzone associated with an increased rate of liver failure as compared to that of other antidepressants. Despite these particular findings, in July 2001, the FDA directed BMS to issue a “Dear Doctor” letter to communicate to health professionals that cases of life-threatening hepatic failure had been reported in patients treated with Serzone. The FDA further required BMS to change Serzone’s labeling to include a black box warning, the most serious warning used in prescription labeling. The revised label cautioned:

The reported rate in the United States is about 1 case of liver failure resulting in death or transplant per 250,000 — 300,000 patient years of Serzone treatment. This represents a rate of about 3 — 4 times the estimated background rate of liver failure. This rate is an underestimate because of under reporting, and the true risk could be considerably greater than this. A large cohort study of antidepressant users found no cases of liver failure leading to death or transplant among Serzone users in about 30,000 patient years of exposure. The spontaneous report data and the cohort study results provide estimates of the upper and lower limits of the risk of liver failure in nefazodone treatment patients, but are not capable of providing a precise risk estimate.

Given entry of generic forms of nefazodone into the market and the declining volume of branded sales, BMS discontinued the manufacture and sale of Serzone on June 14, 2004. That same day, the FDA declined to remove Serzone from the United States market and issued the following statement:

The Agency believes: (1) nefazodone may provide an important alternative to other antidepressants; (2) although there is a risk of liver injury associated with nefazo-done, the incidence of liver failure appears to be low; ... (4) the black box warning adequately addresses liver toxicity overall

Nefazodone hydrochloride manufactured by entities other than BMS remains on the market as the FDA continues to believe that its risk-benefit profile supports its continued use in certain patients.

According to David Dunner, M.D., one of BMS’s medical experts, the causes of depression are not fully understood. (Dunner Aff. ¶ 9, June 9, 2005).2 Research indicates that it has biological, genetic, environmental, and psychological bases. Id. at ¶ 9. The biologi[225]*225cal basis has been linked to imbalances of certain neurotransmitters in the brain, particularly serotonin and norepinephrin. Id. at ¶ 11. Drugs like Tofranil, Prozac, and Ser-zone have been developed to correct these imbalances. Id. at ¶¶ 12 & 13. Each of these drugs, however, uses a different mechanism of action to achieve desired results. Id. For example, Selective Serotonin Reup-take Inhibitors (SSRIs), like Zoloft and Prozac, regulate serotonin levels by blocking the ability of nerve endings to bind and break down serotonin. Serzone utilizes a different mechanism of action that affects two specific receptors to regulate serotonin levels. Ser-zone also has effects on the norepinephrine receptors. Id. at ¶ 3.

Accordingly, not all antidepressants work equally well in all patients. Id. at ¶ 14. Antidepressants not only operate by different mechanisms of action, but they also carry different side effects, and presentation of these effects varies among individual patients. Id. Treatment of depression with drug therapy thus boils down to a process of patient monitoring and trial and error to determine which available antidepressant functions best to restore a patient to well-being.3 Because the availability of a variety of medications increases the odds of finding the right treatment for depression in a particular individual, nefazaodone remains on the market despite its considerable risks, and its required use of the FDA’s black box warning.4

Similar to the unknowns surrounding the origins and treatment of depression, liver disease can be idiosyncratic and difficult to diagnosis. (Watkins Aff. ¶ 19, June 3, 2005).5 This is due in large part to the important role that the liver plays in many of the body’s essential functions. Id. at ¶ ¶ 6,7, & 8. The liver stores nutrients, helps control certain hormone levels in the blood, and produces important substances like those that allow blood to clot and those that aid in the digestion of fats. Id. at ¶ 6. Most importantly, the liver filters all the blood from the digestive tract before it goes to the rest of the body. Id. at ¶ 7. Accordingly, the liver must deal with both beneficial and harmful components carried in the blood. Id.

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Bluebook (online)
231 F.R.D. 221, 2005 WL 2560509, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-serzone-products-liability-litigation-wvsd-2005.