Their 3 oldest daughters made it out, but were blocked from their siblings by the blaze (although they did call out to them immediately upon seeing the fire, even before they'd left their own beds, but the little ones never woke up).
Within a minute, the room was impossible to enter.
Within 10 minutes, it was impossible to even enter the hall leading to the bedroom, even for fire fighters.
As far as anyone knows, Tzvi z"l & Efrat z"l never woke up.
Their mother took comfort in the fact that their last words were the Bedtime Shema.
Anyway, this hasn't seemed to have spread to the English-language media yet, but the Ginsburgs just had triplets this morning (Wednesday, 10 Iyar): 2 girls & a boy.
(UPDATE: This wonderful news is now in English HERE.)
(Although there seems to be some question whether it's boy-girl twins or boy-girl-girl triplets. But either way, it's a big bracha.)
And while nothing can replace the irreplaceable children lost in the fire, it is certainly a big nechamah and chessed from Hashem for the Ginsburgs to receive these multiples.
May they have much nachas from all their children and raise them to Torah, chuppah, and maasim tovim.
May we know no more tzarot in Am Yisrael.