The Melnick sisters, seen here at a hotel in Boston on Jan. 7, 2013, are suing Eli Lilly and Co., alleging that a synthetic estrogen known as DES caused them all to get breast cancer. From left are Francine Melnick, Andrea Andrews, Donna McNeely and Michele Fecho. (Associated Press)

Photo by: Charles Krupa

The Melnick sisters, seen here at a hotel in Boston on Jan. 7, 2013, are suing Eli Lilly and Co., alleging that a synthetic estrogen known as DES caused them all to get breast cancer. From left are Francine Melnick, Andrea Andrews, Donna McNeely and Michele Fecho. (Associated Press)