Sun Pharma Advanced Research Company (SPARC) has informed exchanges that its licensing partner, Ocuvex Therapeutics Inc., has received a Complete Response Letter (CRL) from the US Food and Drug Administration (USFDA) regarding the New Drug Application (NDA) for PDP-716.
The regulatory communication was linked to inspection-related observations at the finished product manufacturing facility, while no additional concerns were raised about the application itself.
In a regulatory filing submitted under SEBI’s Listing Obligations and Disclosure Requirements regulations, SPARC stated that Ocuvex Therapeutics received the CRL from the USFDA for PDP-716.
The company clarified that the regulator’s response was associated with findings identified during an inspection of the manufacturing site responsible for the finished product.
According to the filing, the USFDA did not raise any concerns related to the clinical or scientific aspects of the drug application. The observations were limited to the manufacturing facility involved in the production process.
A Complete Response Letter is generally issued when the USFDA concludes that a drug application cannot be approved in its current form and requires further corrective measures, clarifications or additional information before proceeding.
PDP-716 is a drug candidate for which Ocuvex Therapeutics had submitted a New Drug Application to the USFDA for regulatory review. Ocuvex acts as the licensing partner for the product.
While the company did not specify a revised timeline for the approval process, such regulatory responses typically require applicants to address the identified issues before resubmission.
The regulatory development weighed on investor sentiment, with SPARC shares witnessing pressure after the announcement. Regulatory setbacks involving product approvals can impact timelines related to commercialisation and future revenue expectations.
Investors generally monitor updates related to manufacturing compliance and regulatory clearances closely, particularly in the pharmaceutical sector.
Shares of Sun Pharmaceutical Industries were trading at ₹1,887.10 on May 20, 2026, at 10:59 AM, compared to the previous close of ₹1,882.30. The stock gained ₹4.80, reflecting an increase of 0.26% during the session.
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The USFDA’s Complete Response Letter for PDP-716 marks a regulatory hurdle for Ocuvex Therapeutics and Sun Pharma Advanced Research Company.
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Published on: May 20, 2026, 11:03 AM IST
Neha Dubey
Neha Dubey is a Content Analyst with 3 years of experience in financial journalism, having written for a leading newswire agency and multiple newspapers. At Angel One, she creates daily content on finance and the economy. Neha holds a degree in Economics and a Master’s in Journalism.
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