The phrase "although not conclusive" is correct and usable in written English.
It can be used to indicate that something is not definitive or final, often in the context of evidence or arguments.
Example: "The results of the study suggest a correlation between the two variables, although not conclusive."
Alternatives: "though not definitive" or "albeit inconclusive".
Although not conclusive, this result supports our conclusions and indicates an experiment using harder questions would be a fruitful next study.
There is also evidence – although not conclusive – that the tax increased volatility.
Although not conclusive, we have evidence that adding a surfactant improved the ability of the traps to retain yellowjackets.
Our results, although not conclusive, indicate that planar-like regions affected by cycling may lead to the observed fatigue in tetragonal PZT.
There are reasonable, although not conclusive grounds for supposing that this could be the place the ancients called Ultima Thule, the edge of the known world.
Although not conclusive, this initial negative result prompted us to probe unknown regulations, and malate was identified as inhibitor of hexokinase 2 expression either through direct or indirect actions.
The survival rate, VFD, and time on ECMO data, although not conclusive, are encouraging and indicate the need for a definitive trial of this novel intervention in these neonates with high mortality.
Although not conclusive, the results might signify an undiscovered particle--or an experimental fluke.
Previous association studies have provided some, although not conclusive, evidence for involvement of this gene in migraine susceptibility.
Although not conclusive, data suggest that psyllium, a soluble fiber, reduces abdominal pain and/or improves stooling symptoms in adults with IBS [70 72].
Although, not conclusive, most clinical studies report that PTH occurs less frequently after severe TBI than mild head injury [32, 33].
