Mo. Rev. Stat. § 491.180
Current with changes from the 2023 Legislative Session
If a party, on being duly summoned, refuse to attend and testify, either in court or before any person authorized to take his deposition, besides being punished himself as for a contempt, his petition, answer or reply may be rejected, or a motion, if made by himself, overruled, or, if made by the adverse party, sustained.
§ 491.180, RSMo
RSMo 1939 § 1894