We saw the "Sunrise" poster several times while we were there.
Inasmuch as that poster, #P87,ended in an "odd" number, it had already been "presented" on Friday, per the printed SITC 2017 final program. The fact that you arrived late on Saturday, near the closing time for poster #s ending in an even #[e.g.,#P262] presentations on Saturday, I am not particularly surprised #P87 had been taken down Saturday evening by the time you attempted to see it. No posters were displayed on Sunday, if I read the printed program correctly. #P87 had not been "withdrawn".
We discussed #P87 with Dr. Kleen of Epiontis, now Precision for Medicine, earlier in the day. He has 2 cards--one lists him as Executive Vice President Immune Monitoring[Epiontis], the other lists him VP Immune Monitoring and Specialty Lab Solutions[PfM]. We also learned he has 2 homes---one in Berlin, the other in the U.S. Just before we left the Exhibit Hall ~4:15, Dr. Kleen with Nikoletta met us-- our conversation was more social than technical. No indication that Dr. NK had been "fired".
Turning to #P262, we discussed #P262 with Dr. Budhu. Dr.Terghoub was at SITC, but in meetings. We did not talk with him, nor with Dr. Wolchok who did not attend SITC we were told. Sadna seemed enthusiastic as ever talking with us as well as with several other people. Distressed is an inappropriate word choice, IMO; a "wonder what happens next" is more appropriate for each of Drs Kleen, Budhu and Kallinteris who are aware of initial proxies that are extant. Dr. Budhu affirmed that a design of a clinical trial in humans is in process.
Like you, I am unable to post camera shots I took with I-Phone 6+.
Lack of knowledge and hardware/software is the reason. Images will be posted by SITC shortly in any event. I will do my best to compare my photos with the text description of each poster already given by CJG in post #317246, particularly the summaries or conclusions recited in each.
Among many other poster exhibits, I also spent some time discussing HALO #P496 with its presenter, Dr. Thompson. We walked, stopped and stood ~ 2 miles in the aisles of exhibits and booths in the exhibit hall during the day. The booths of AZN, BMY, DNA/Roche, MRK, LabCorp, Nanostrings were longer stops than others