Response to the letter entitled: Re: ‘Prognostic value of high-risk HPV DNA and p16INK4a immunohistochemistry in anal cancer patients: An individual patient data meta-analysis’

We thank Tomoyuki Kawada for his interest in and comment on our manuscript ‘Prognostic value of high-risk HPV DNA and p16INK4a immunohistochemistry in anal cancer patients: an individual patient data meta-analysis’ [1].