The phrase "although it is assumed" is correct and usable in written English.
It can be used to introduce a contrast or exception to a statement that follows, often indicating that something is taken for granted or accepted without proof.
Example: "Although it is assumed that all participants will arrive on time, we should still prepare for potential delays."
Alternatives: "even though it is presumed" or "despite the assumption that".
Although it is assumed that these silent earthquakes are located along the plate megathrust, this has not been proved.
No one has admitted carrying out the mass kidnapping, although it is assumed to be the work of Boko Haram, the al-Qaida-linked jihadi group.
Although it is assumed that Ca2+ ions are important intracellular messengers in diatoms, little is known about their specific role at the cellular level.
Although it is assumed Weinstein and Lo Porto were killed by a drone strike, it is not known precisely when or where it took place, or how many al-Qaida operatives or other civilians were killed in the strike.
The marriage may be fake too, as the FBI claims the couples were paired in Moscow for the assignment, although it is assumed the children are really theirs and entirely ignorant of their parents' alleged work.
They are solitary animals, and in the Atlantic they are sufficiently uncommon that no one knows how many there are, although it is assumed that there are not many.
Although it was assumed that with specialized pediatric neurosurgical and intensivist coverage that patient outcomes would be improved in PTCs, targeted research is lacking, and it remains the case that most pediatric trauma patients are treated in ATCs.
Although it's assumed that jack-off clubs rose to popularity in the wake of AIDS in the 80s when there was a heightened fear of infection through intercourse, Rosenberg says this sort of play had been going on since early history because of desire, not fear of STIs or contracting HIV.
The mean catch per one-day trip has been only 266 kg although it was assumed that the average catch rates would be around 500 kg/hr.
Although it was assumed for many years that the LXR step is NADPH-dependent, recent investigations in A. niger showed that the NADPH-dependent l-xylulose reductase activity is not needed for rapid growth on l-arabinose.
Although it was assumed that some MUT genes might also be regulated by catabolite de-repression [ 15], the extent of this regulatory pathway has not been shown experimentally in P. pastoris.
