The phrase "although this subject" is correct and usable in written English.
It can be used to introduce a contrasting idea or point related to the subject being discussed.
Example: "Although this subject is complex, it is essential for understanding the broader context of the issue."
Alternatives: "even though this topic" or "despite this matter".
Although this subject has been investigated for many years, it still remains a notorious task.
Although this subject has recently caught the attention of numerous policy and regulatory agencies, rarely is it holistically addressed in terms of an integrated engineering system for its management, planning, and regulation as an interdisciplinary concern.
The transportation modes utilized do not appear in most of the reports, although this subject might enlighten academic researchers on the real-world challenges and implications.
When Darwin finally was forced to publish his evolutionary views in 1858 and 1859, he avoided the subject of human evolution, although this subject was the driving force behind all the work that he had done so far.
Although this subject matter was important to research, we were unprepared for the reaction the paper received when it was published and have taken to heart the comments and criticism.
However, a direct infection of the lung by NTM has been suggested as well, although this subject is still a matter of debate (Aksamit 2003).
We also call for greater efficiency in the way in which Member States follow up each other's judicial decisions, although, on this subject, we were still awaiting the results of the codecision provided for by the Constitution.
(That Mr. Sarkozy, 52, struggles with his weight is well documented, although even on this subject, truth can be relative.
Similarly, the recent SPLIT trial also failed to demonstrate a significant difference between saline and a balanced solution (Plasma-Lyte) in critically ill patients [26], although this study has been subject to a lot of criticisms [21].
Catherwood is an excellent guide at cutting through the mythology that surrounds this subject, although he does not always appreciate the implications of some of his arguments.
Despite this, innate immune responses are probably induced in vivo, although detailed studies on this subject are lacking.
