18 August 2017 - U.S. House Democrats said on Thursday they were launching an investigation into why prices for multiple sclerosis treatments have nearly quintupled since 2004, and they sent letters requesting information from seven drugmakers.

U.S. Representatives Elijah Cummings and Peter Welch sent the letters to Bayer AG, Biogen Inc, Merck KGaA's EMD Serono unit, Novartis AG, Roche Holding AG, Sanofi SA, and Teva Pharmaceutical Industries Inc.

The lawmakers on the U.S. House Committee on Oversight and Government Reform said in the letters that they were looking to determine whether drug companies were raising prices for multiple sclerosis drugs in lockstep with their competitors.

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