https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2765279/figure/F2/ Day 258 has 39 protein-coding genes (browser view) including CLLU1 (chronic lymphocytic leukemia up-regulated 1).
It is extremely unusual for a gene to be found only in humans and no other primates – there are only three examples including CLLU1.
Click here to see all 8329707 letters of Day 258 with CLLU1 underlined.