Median age at diagnosis for MYCN retinoblastoma was 4.5 months, compared with 24 months for those who had non-familial unilateral disease with two RB1 gene mutations.
Median umur pada diagnosis retinoblastoma adalah 4,5 bulan, dibandingkan dengan penderita berusia 24 bulan dengan penyakit unilateral non-familial dengan mutasi dua gen RB1.