UNITED STATES
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CURRENT REPORT
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| Item 8.01 | Other Events. |
On September 18, 2024, 4D Molecular Therapeutics, Inc. (the “Company”) reported the longest interim follow-up data from its Phase 1/2 clinical trial (“PRISM”), which is evaluating clinical activity and safety of intravitreal 4D-150 in broad wet age-related macular degeneration (“wet AMD”). In addition, the Company also announced the study design for its planned Phase 3 clinical trial for 4D-150 for the treatment of wet AMD (“4FRONT”).
Interim Data from 4D-150 Phase 1/2 PRISM Study
PRISM is a randomized, controlled clinical trial evaluating 4D-150 in previously treated wet AMD patients with severe disease activity and high treatment burden.
As of the most recent cutoff date (September 3, 2024), interim results from PRISM include:
| • | Robust and durable treatment burden reduction was observed in all PRISM populations studied with the planned Phase 3 dose of 3E10 vg/eye of 4D-150: |
| • | Phase 1/2a Severe (n=24, through 52 weeks): (i) 83% overall reduction in annualized injections, (ii) 52% received 0 or 1 injection*; and (iii) 44% injection-free*. |
| • | Phase 2b Broad (n=30, through 52 weeks): (i) 89% overall reduction in annualized injections; (ii) 80% received 0 or 1 injection*; and (iii) 70% injection-free*. |
| • | Phase 2b Recently Diagnosed** (n=15, through 52 weeks): (i) 98% overall reduction in annualized injections; (ii) 100% received 0 or 1 injection*; and (iii) 87% injection-free*. |
| * | Based on Kaplan-Meier method for calculating endpoint with follow-up through 52 weeks (Phase 1/2a) and variable follow-up through 32–52 weeks (Phase 2b). |
| ** | Defined as diagnosed ≤6 months. |
| • | Central Subfield Thickness (“CST”): sustained anatomic control with fewer fluctuations. |
| • | Mean best corrected visual acuity (“BCVA”): stable (Phase 1/2a) or sustained improved (Phase 2b). |
| • | Safety data demonstrated that 4D-150 continues to be well tolerated with favorable safety profile: |
| • | Rate of 4D-150 intraocular inflammation (“IOI”) was numerically similar to that reported for approved anti-VEGF agents. |
| • | Wet AMD: (i) 2.8% (2 of 71) had 4D-150–related IOI at any timepoint (2 patients had transient 1+ vitreous cells); (ii) 99% (70 of 71) completed steroid prophylaxis taper on schedule; and (iii) 97% (69 of 71) remained off steroids completely. |
| • | Diabetic Macular Edema (DME; SPECTRA trial): No patients treated at any dose (n=22) have experienced IOI events at any timepoint. |
| • | No 4D-150–related hypotony, endophthalmitis, vasculitis, choroidal effusions or retinal artery occlusions were observed to date across both the wet AMD and the DME programs. |
4FRONT Wet AMD Planned Phase 3 Program Key Design Elements
The planned 4FRONT study will compare a single dose of 4D-150 3E10 vg/eye to on-label aflibercept 2mg Q8 weeks. The initiation of 4FRONT-1 clinical trial (N=500) is expected in the first quarter of 2025. The eligibility criteria for 4FRONT include: (i) that patients must be both recently diagnosed and treatment naïve wet AMD patients and (ii) randomization requires on study demonstration of aflibercept responsiveness.
4FRONT is expected to include two double-masked, randomized, controlled noninferiority trials. The primary endpoint is noninferiority in BCVA. 4FRONT will be sham controlled to support masking, and all patients will be randomized to receive 3 total loading doses per aflibercept label.
Supplemental aflibercept injection criteria for the 4D-150 arm will be optimized to help protect primary BCVA endpoint and to potentially maximize reduction of supplemental treatment burden, and no supplemental injections will be allowed in the control arm. The study design has been aligned with feedback from the U.S. Food and Drug Administration under RMAT designation, and alignment is ongoing with the European Medicines Agency under PRIME designation.
Forward-Looking Statements
This Current Report on Form 8-K contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, but are not limited to, statements regarding the Company’s clinical development plans for 4D-150 and timing for the announcement of results from ongoing clinical trials. In some cases you can identify these statements by forward-looking words such as “may,” “will,” “continue,” “anticipate,” “intend,” “could,” “project,” “expect” or the negative or plural of these words or similar expressions. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including risks and uncertainties that are described in greater detail in the section entitled “Risk Factors” in the Company’s most recent Quarterly Report on Form 10-Q as well as any subsequent filings with the Securities and Exchange Commission. The Company expressly disclaims any intent or obligation to update these forward-looking statements, except as required by law.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| 4D MOLECULAR THERAPEUTICS, INC. | ||||||
| Date: | September 18, 2024 | By: | /s/ Uneek Mehra | |||
| Uneek Mehra Chief Financial and Business Officer | ||||||