LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS

Know all by these presents, that the undersigned hereby constitutes and appoints
Adi Osovsky and Adriana Sullivan, signing singly and each acting individually,
as the undersigned's true and lawful attorney-in-fact to:
      1. execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer or director or both of iTeos Therapeutics, Inc. (the
"Company"), Forms 3, 4 and 5 (and any amendments thereto) in accordance with
Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), and the rules thereunder;
      2. do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form 3, 4
or 5, complete and execute any amendments thereto, and timely file such form
with the U.S. Securities and Exchange Commission (the "SEC"), including without
limitation the filing of a Form ID or any other documents necessary or
appropriate to enable the undersigned to file the Forms 3, 4 and 5
electronically with the SEC; and
      3. seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information on transactions in the Company's securities
from any third party, including brokers, employee benefit plan administrators
and trustees, and the undersigned hereby authorizes any such person to release
any such information to each of the undersigned's attorneys-in-fact appointed by
this Limited Power of Attorney and approves and ratifies any such release of
information; and
      4. take any other action in connection with the foregoing which, in the
opinion of such attorney-in-fact, may be of benefit to, in the best interest of,
or legally required by or for, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Limited Power of Attorney shall be in such form and shall
contain such information and disclosure as such attorney-in-fact may approve in
such attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever required,
necessary or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Limited Power of Attorney and the rights and powers
herein granted.

The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in
such capacity at the request and on the behalf of the undersigned, are not
assuming, nor is the Company assuming, any of the undersigned's responsibilities
to comply with, or any liability for the failure to comply with, any provision
of Section 16 of the Exchange Act.

This Limited Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 or 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to each
of the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has executed this Limited Power of Attorney
as of this 31 day of August, 2021.


Signed and acknowledged:


/s/ Michel Detheux, Ph.D.
Signature


Michel Detheux, Ph.D.
Printed Name