HGEN - Humanigen (HGEN) Presents at the ROTH 34th Annual Conference 2022 - Slideshow March, 20 2022 06:44 AM Humanigen Inc. The following slide deck was published by Humanigen, Inc. in conjunction with this event. For further details see: Humanigen (HGEN) Presents at the ROTH 34th Annual Conference 2022 - Slideshow