Comma after PSP?

SINGAPORE - The vice-chairman of the Progress Singapore Party (PSP) founded by Dr Tan Cheng Bock, has left the party, about six weeks after taking over the senior post.

Ms Michelle Lee, who has been in the party's Central Executive Committee (CEC) since its founding last year, quit to spend more time with her family, the party said on Thursday (March 5).

Should there be a comma after PSP? If not, what is the reason?

Thanks.