Mo. Rev. Stat. § 213.045
It shall be unlawful for any bank, building and loan association, insurance company or other corporation, association, firm or enterprise whose business consists in whole or in part in the making of commercial real estate loans, to deny a loan or other financial assistance because of race, color, religion, national origin, ancestry, sex, disability or familial status to a person applying therefor for the purpose of purchasing, construction, improving, repairing, or maintaining a dwelling, or to discriminate against him in fixing of the amount, interest rate, duration or other terms or conditions of such loan or other financial assistance, because of the race, color, religion, national origin, ancestry, sex, disability, or familial status of such person or of any person associated with him in connection with such loan or other financial assistance, or of the present or prospective owners, lessees, tenants, or occupants, of the dwellings in relation to which such loan or other financial assistance is to be made or given.
§ 213.045, RSMo