sˈɪksti tˈuː pɚsˈɛnt ʌv kɔːɹdˈoʊməz ɛkspɹˈɛs ðə hˈaɪ məlˈɛkjʊlɚ wˈeɪt mˌɛlɐnˈoʊmə ɐsˈoʊsɪˌeɪɾᵻd ˈæntɪdʒˌɛn, ˈɔːlsoʊ nˈoʊn æz kˈɑːndɹɔɪtˌɪn sˈʌlfeɪt pɹˈoʊɾəɡlˌɪkən fˈoːɹ sˌiːˌɛspˌiːdʒˈiː fˈoːɹ wˌɪtʃ hˈæzbiːn ðə tˈɑːɹɡɪt ʌv ɪmjˈuːn θˈɛɹəpi.
62% of chordomas express the High Molecular Weight Melanoma Associated Antigen, also known as Chondroitin sulfate proteoglycan 4 (CSPG4) which has been the target of immune therapy.