Mark McCostlin, and Karen McCostlin Missouri Cases

Mark and Karen McCostlin appealed the trial court's grant of a directed verdict in favor of Monsanto Company in their strict liability and negligence action, alleging Mr. McCostlin's exposure to Roundup caused his non-Hodgkin's Lymphoma. The McCostlins contended their expert testimony established a submissible case on causation, the trial court misinterpreted evidence, and erred in denying a motion to recall an expert and sustaining an objection during redirect. The appellate court affirmed the trial court's judgment, holding that the McCostlins' causation expert failed to demonstrate a causal connection, and the trial court did not err in its procedural and evidentiary rulings.