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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 8-K

                                 CURRENT REPORT


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                         Date of Report: April 13, 1999



                         Commission File Number: 0-18976


                          CELTRIX PHARMACEUTICALS, INC.
             (Exact name of registrant as specified in its charter)



         DELAWARE                                      94-3121462
   (State or other jurisdiction          (I.R.S. Employer Identification No.)
 of incorporation or organization)



           2033 Gateway Place, Suite 600, San Jose, CA 95110 (Address
                  of principal executive offices and zip code)


                  Registrant's Telephone Number: (408) 988-2500



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ITEM 5.    OTHER EVENTS

      On April 13, 1999, Celtrix Pharmaceuticals, Inc., a Delaware corporation
(the "Company") announced Celtrix Pharmaceuticals Forms Partnership with Elan
plc to Treat Osteoporosis. Further details regarding this announcement are
contained in the Company's news release dated April 13, 1999, attached as
exhibit hereto and incorporated by reference herein.

ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS

(A)   EXHIBITS

Exhibit 21 Celtrix Pharmaceuticals, Inc. News Release dated April 13, 1999.





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                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.




                            CELTRIX PHARMACEUTICALS, INC. (Registrant)


Date: April 13, 1999        By: /s/ DONALD D. HUFFMAN                         
                            ---------------------------------------------------
                            Donald D. Huffman
                            Vice President, Finance & Administration Chief
                            Financial Officer (Duly authorized principal
                            financial and accounting officer.)




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                          CELTRIX PHARMACEUTICALS, INC.
                                INDEX TO EXHIBITS




     Exhibit Number
     --------------
                                                    
     Exhibit 21       Celtrix Pharmaceuticals, Inc. Press Release
                      dated April 13, 1999.