This is a very relevant issue, especially in the adjuvant setting. This came up for us recently when a 34 year old woman with Stage IV melanoma resected to NED (no evidence of disease) was going to start adjuvant ipilimumab. She was recently married and asked about having children. In discussion with her PCP, she was referred to a fertility specialist who felt immunotherapy itself would not impact her ovarian reserve, but her advancing age could as she awaits completion of therapy and then more time to ensure she does not recur. For that reason, embryo cryopreservation could be considered. One of our concerns was that development of hypophysitis from I/O therapy may make in vitro fertilization difficult, but that was not felt to be a major concern as gonadroptropins would be used in this setting.
Here is another related question – what are your recommendations about pregnancy for females with a history of Stage III or Stage IV melanoma resected to NED?