Patent ID: 7858765

Claim:
An isolated nucleic acid encoding a polypeptide consisting of: a) SEQ ID NO: 6; b) SEQ ID NO: 6, wherein one or more amino acids have been deleted, said polypeptide contains SEQ ID NO: 13 and said polypeptide binds to the OX40 receptor (OX40R); c) between 5 and 10 contiguous amino acids of SEQ ID NO: 1, wherein said polypeptide contains SEQ ID NO: 13 and binds to OX40R; d) SEQ ID NO: 8 or SEQ ID NO: 13; e) an active mutant of a), b), c) or d), wherein one or more of the amino acids has been conservatively substituted and said active mutant binds to OX40R; or f) a fusion polypeptide or peptide comprising a first amino acid sequence and a second amino acid sequence, wherein said first amino acid sequence is a protein sequence other than human OX40L fused to a second amino acid sequence selected from: i) SEQ ID NO: 6; ii) SEQ ID NO: 6, wherein one or more amino acids have been deleted, said second amino acid sequence contains SEQ ID NO: 13 and said fusion polypeptide binds to the OX40 receptor (OX40R); iii) between 5 and 10 contiguous amino acids of SEQ ID NO: 1, wherein said contiguous amino acids of SEQ ID NO: 1 contain SEQ ID NO: 13 and said fusion polypeptide binds to OX40R; or iv) SEQ ID NO: 8 or SEQ ID NO: 13.