Genzyme Manufacturing Fixes to Influence Sanofi Offer

Genzyme Corp. may take three to four years to complete changes requested by U.S. regulators after a plant contamination, a process critical to buyout talks with French drugmaker Sanofi-Aventis SA, analysts said.

Genzyme reported its estimated timeline to finish work requested by the Food and Drug Administration in a regulatory filing. In May, the Cambridge, Massachusetts-based biotechnology company projected fixes would take about two to three years. Any change in the timeline won’t have a material impact on drug supplies, Ron Branning, Genzyme’s senior vice president of global product quality, said today in an interview.