Keryx Biopharmaceuticals interview questions

Applied on Glassdoor, got contacted by a 3rd party recruiter to set up an introductory call. She missed the initial call but rescheduled for the next day. After that I spoke to the hiring manager, position was pretty straightforward, just as described in the job posting. Asked the recruiter for an e-mail address to thank the hiring manager, only silence after. Has never happened to me in 5+ years of work, but I guess there's always a first.