My son was disappointed at only having reached 5'8" (I'm 6'1", his mother 4'10")....just the luck of the genes draw I guess, but he has also enjoyed perfect health and fitness from birth, was breast fed until 2 years of age and probably weighs nearly as much as me now, with the gym work, only 6% body fat too.
My Filipina stepdaughter has topped out at 4'11" after spending most of her life from 7 years old here in the UK. She has to watch her weight though, but I put that down to the student life here of boozing, as she naturally has a very small frame.
My stepson, who's father is of 'unknown origin' to me but clearly not Filipino, is also 5'8" but of light build. He spent his first 9 years in the Phils.