Central Asia to US is 250,000 miles for a return TK standard award in C/J, so 125,000 miles for a o/w ticket is spot on.
If you would be able to find promotional award availability it would be 52,500 for o/w ticket but finding availability to SFO/US on short notice like this, is close to impossible.
USD 770 sounds right for KTM-IST-SFO. Alone YR is USD 615 for this trip.