Furthermore, the combination trial of BXCL701, bempeg from Nektar and avelumab from Pfizer and Merck KGaA in second-line pancreatic cancer, will start following the completion of Nektar and Pfizer Phase Ib safety study of bempeg and avelumab and the outcome of that trial.
What is the relationship between 'avelumab' and 'Pfizer' in the context of the input sentence.
Options: manufacturer, brand, member of, creator