The sire is Earthlight, a horse who was one of the best two-year-olds in Europe during his own racing days and has quickly built a reputation for passing on speed and precocity to his offspring. The mother's side brings in Royal Applause, a bloodline long associated with fast, sharp horses who tend to hit the ground running. On paper, Cagney looks built for speed over shorter distances, and the breeding suggests this is a horse that could be competitive early rather than one who needs time to grow into themselves.
The trainer is Kevin Ryan, who operates out of Hambleton in North Yorkshire and is having a strong season — 45 winners already, which is the kind of output that marks out a yard firing on all cylinders. Ryan has a well-earned reputation for getting two-year-olds ready to perform first time out, so the fact that he has chosen to run Cagney now rather than wait is itself a mild statement of confidence. Trainers who don't think a young horse is ready tend to keep them at home a little longer.
There is nothing more to say about Cagney's record, because there isn't one yet. But that's part of what makes a debut interesting — for a few minutes, every possibility is still open.