NEW YORK, NY - January 28, 2026 (NEWMEDIAWIRE) - Kaplan Fox & Kilsheimer LLP is investigating potential securities violations against REGENXBIO Inc. (“REGENXBIO” or the “Company”) (NASDAQ: RGNX).
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If you are a REGENXBIO investor and have suffered losses, or if you have information that could assist in the REGENXBIO investigation, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing jcampisi@kaplanfox.com or by calling (212) 329-8571.
On January 28, 2026, before the market opened, the Company disclosed that the FDA “placed a clinical hold on its investigational gene therapy, RGX-111, for the treatment of MPS I, also known as Hurler syndrome, following preliminary analysis of a single case of neoplasm (intraventricular CNS tumor) in a participant treated in its Phase I/II study.” The Company further disclosed that “[t]he FDA also placed a clinical hold on RGX-121, for the treatment of MPS II, also known as Hunter Syndrome, citing the similarities in products, study populations, and shared risk between the clinical studies . . . REGENXBIO has not yet received the full clinical hold letter and awaits additional details from the FDA.”
Following this news, on January 28, 2026, the price of REGENXBIO stock declined from a closing price on January 27, 2026 of $13.41 per share, to trade as low as $9.92 per share, a decline of $3.49 per share, or by 26% during intraday trading.
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If you have any questions about this investigation, please contact:
CONTACT:
Jeffrey P. Campisi
KAPLAN FOX & KILSHEIMER LLP
800 Third Avenue, 38th Floor
New York, New York 10022
(212) 329-8571
jcampisi@kaplanfox.com
Laurence D. King
KAPLAN FOX & KILSHEIMER LLP
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Oakland, California 94612
(415) 772-4704
lking@kaplanfox.com
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https://www.kaplanfox.com/case/regenxbio-inc/
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