Novelion Therapeutics (NVLN) 10-Q 2012 Q2 Quarterly report

EXHIBIT 32.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of QLT Inc. (the “Company”) for the quarterly period ended June 30, 2012, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert L. Butchofsky, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at and for the periods indicated.

Dated: August 2, 2012

/s/ Robert L. Butchofsky

Robert L. Butchofsky

President and Chief Executive Officer

(Principal Executive Officer)

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