A Philadelphia judge excluded the testimony of a physician expert in support of a plaintiff’s claim that her husband’s fatal brain cancer was caused by exposure to chemicals in an industrial setting because no scientific or other specialized knowledge was used in formulating the doctor’s opinion.

Excluding Dr. Thomas H. Milby’s testimony led to Philadelphia Court of Common Pleas Judge Gary F. DiVito granting summary judgment to Rohm and Haas Co. and Rohm and Haas’ successor, Dow Chemical Co., against plaintiff Anne Snizavich.