オキュジェン（OCGN）2026年第3四半期決算説明会：OCU400のデータ発表は2027年第1四半期に予定

主要なポイント

• Ocugen（NASDAQ: OCGN）の2026年第3四半期末時点における現金、現金同等物、拘束性預金および短期投資の合計は8,460万ドルとなりました。経営陣は、これにより2028年までの資金繰り（キャッシュ滑走路）が確保され、レイトステージにある3つの開発プログラムのうち2つについて、予定されているバイオ医薬品承認申請（BLA）の提出までの資金が手当てされると見込んでいます。
• 3つの修飾遺伝子治療プログラムはいずれも第III相試験に入っています。経営陣は2028年までに3件のバイオ医薬品承認申請（BLA）を提出する計画に沿って着実に進展しているとしています。
• 網膜色素変性症を対象としたOCU400の第III相liMeliGhT試験（被験者数140人）の被験者登録が完了しました。トップラインデータは2027年第1四半期に予定されており、その後BLAの提出が計画されています。
• スターガルト病を対象としたOCU410STのトップラインデータは2027年第2四半期に見込まれています。中間レビューを受け、独立データモニタリング委員会（DMC）は変更なしで試験を継続することを推奨しました。
• OCU410は地図状萎縮を対象とした第III相試験に入りました。237人の患者を対象とするArMaDa3試験で投与が開始されており、2027年の登録完了、2028年のBLA提出を目標としています。
• 第3四半期の営業費用は1,970万ドルとなり、前年同期の1,940万ドルから増加しました。1株当たりの純損失は前年同期の0.07ドルから0.01ドルへと縮小しました。

主要財務データ

2026年9月30日時点における現金、現金同等物、拘束性預金および短期投資の合計は8,460万ドルでした。Ocugenの発行済普通株式数は3億3,930万株でした。

事業および業績の動向

網膜色素変性症を対象とするOCU400

Ocugenは第III相liMeliGhT試験において140人の患者の登録を完了しました。本試験では92人が治療群、48人が未治療対照群に無作為化されました。プロセス適合性確認（PPQ）バッチの製造が完了しており、計画されているBLA提出と将来の商用発売に向けた供給の双方をサポートします。

経営陣は、第III相の適格基準を満たす第I/II相試験の被験者7人を対象とした事後解析を引き合いに出し、治療眼の71.4%が52週時点でLDNAスケールで少なくとも2段階以上の改善という第III相のレスポンダー閾値を満たすと予測されたことを明らかにしました。

3年経過時点で、評価可能な治療被験者8人中7人（88%）が、非治療眼と比較して低輝度視力の改善または維持を示しました。3年間を通じて、OCU400に関連する重篤な有害事象は報告されていません。

また、OcugenはRoots Pharmaceuticalとの間で、中東および北アフリカ地域におけるOCU400の独占ライセンス契約を締結しました。同社は契約時一時金および潜在的な初期開発マイルストーン支払いとして最大400万ドル、潜在的な販売マイルストーンとして最大2億5,500万ドル、ならびに純売上高に対する22%のロイヤルティを受け取る権利を有します。なお、商用製品の製造はOcugenが担当します。

バハマにおいて、OCU400は長寿・再生医療法（Longevity and Regenerative Therapies Act）に基づく暫定承認と優先指定を受けました。経営陣は年内の正式承認を見込んでおり、本プログラムを通じて世界中の対象患者が治療を受けられるようになると述べています。同社は、価格設定について米国での目標価格と同等にする方針を示しました。

スターガルト病を対象とするOCU410ST

主要な第II/III相GARDian試験は、独立DMCがプロトコルの変更なしを勧告したことを受け、現行のプロトコルに従って継続されています。同試験には63人の患者が含まれており、12カ月時点で主要評価項目を評価します。

経営陣によると、本試験は治療眼と対照眼の間で萎縮病変の拡大に約25%の差があるとの前提に基づき、90%に近い統計学的検出力を持つよう設計されています。初期の第I/II相試験データでは、治療眼において病変拡大の54%の減少と最大6文字の機能的改善が示されましたが、同社は前回の試験が小規模な患者集団を対象としたものであったことを強調しました。

地図状萎縮を対象とするOCU410

9月にグローバル第III相ArMaDa3試験で最初の患者への投与が実施されました。237人の患者を対象とするこの試験では、米国、カナダ、ヨーロッパにおいて、被験者をOCU410の単回網膜下注射群と未治療対照群に2:1の割合で無作為に割り付けます。

主要評価項目は12カ月間における地図状萎縮病変の拡大です。経営陣は現時点で中間解析を行う計画はなく、2027年の登録完了を目指しています。

業績見通し（ガイダンス）

経営陣は、2027年第1四半期にOCU400の第III相トップラインデータが得られると見込んでおり、結果が更なる規制当局の審査を裏付けるものであればBLAの提出を行う計画です。

OCU410STのトップラインデータは2027年第2四半期に見込まれています。同社は、想定されるpre-BLA協議および申請に先立ち、FDAと結果について協議する予定です。

OCU410について、経営陣は2027年のArMaDa3の登録完了と2028年のBLA提出を目標としています。Ocugenは引き続き2028年までに3件のBLA提出を目標としています。

同社は、8,460万ドルの手元流動性により2028年までの事業運営が支えられ、レイトステージにある3つのプログラムのうち2つの予定BLA提出完了までの資金が手当てされると予想しています。

リスクおよび注視事項

• OCU400の主要な有効性データは未確定であり、主要な第III相試験の結果発表（リードアウト）は2027年第1四半期に予定されています。
• OCU410STの中間レビューは有効性解析ではありませんでした。経営陣は、少ない患者サンプル数、8カ月という早期の時点、および不均一なベースライン特性を限界として挙げました。
• スターガルト病の進行は緩やかである一方、遺伝子治療の発現にも時間を要します。そのため、OcugenはOCU410STの評価にあたり12カ月間の完全なデータセットに依存しています。
• BLAの提出は引き続き、臨床試験結果、FDAとの協議、および必要な規制手続きの完了に依存しています。
• 報告された資金繰り（キャッシュ滑走路）で対応できるのは、同社の3つのレイトステージプログラムのうち2つのBLA提出完了までにとどまります。
• バハマにおける経路は依然として暫定承認段階にとどまっており、治験施設の準備状況や正式な規制承認手続きは進行中です。

アナリスト質疑応答の要点

• OCU410STの中間レビュー：経営陣は、8カ月時点での追加の完全データ解析は行わないことを確認しました。同社は盲検状態を維持し、12カ月時点で完全なデータセットを評価します。
• OCU410STの試験規模：経営陣によると、63人の患者を対象とする試験の検出力は90%近くに設定されており、全対象者への拡大と長期間の追跡により、小規模な中間コホートで見られたベースラインの不均衡の影響が軽減されると見込んでいます。
• OCU400の統計的検出力：第III相試験のデザインでは、対照群の10%に対し治療群のレスポンダー率を50%と想定しており、推定検出力は99%となります。経営陣は、仮に治療群のレスポンダー率が20%で対照群が1%であった場合でも、93.2%の検出力が得られると述べました。
• OCU410の試験実施：中間解析の予定はありません。経営陣は、2027年に被験者登録を完了し、2028年にBLAを提出するという目標を改めて表明しました。
• バハマにおけるアクセスモデル：経営陣は、このプログラムが世界中の対象患者に開放されており、従来の臨床プログラムというより商用アクセス経路に近い形で機能すると述べました。現地のパートナーが患者および医療従事者への教育活動を調整します。

決算説明会の全文トランスクリプト

決算説明会の完全なトランスクリプト

経営陣による説明

Operator

Good morning, and welcome to Ocugen's Third Quarter 2026 Financial Results and Business Update. [Operator Instructions] I will now turn the call over to Chris Clark, Ocugen's VP of Communications. You may begin.

Chris Clark

Thank you, operator, and good morning, everyone. Joining me on today's call and webcast is Dr. Shankar Musunuri, Ocugen's Chairman, CEO and Co-Founder, who will provide a business update and an overview of our clinical and operational progress. Rita Johnson-Greene, our Chief Financial Officer, is also on the call to provide a financial update for the quarter ended September 30, 2026.

Dr. Mohamed Genead, our Chief Medical Officer; Dr. Arun Upadhyay, our Chief Scientific Officer; and Abhi Gupta, Executive Vice President of Commercial and Business Development, will be available to answer questions following the presentation. This morning, we issued a press release covering our business and operational highlights for the third quarter of 2026. We encourage listeners to review the press release, which is available on our website at ocugen.com.

A replay of this call, along with the slide presentation, will be available on the Investors section of the Ocugen website. Before we begin, please note that certain statements made during today's discussion may be forward-looking in nature, including those related to our clinical development pipeline, regulatory time lines, commercialization strategy, international expansion and financial information and our anticipated cash runway.

These statements reflect management's current expectations and are inherently subject to risks, uncertainties and assumptions that may cause actual results to materially differ from those expressed or implied. We encourage you to review our filings with the Securities and Exchange Commission, including the risk factors detailed therein for a more comprehensive understanding of these potential risks. Finally, Ocugen's quarterly report on Form 10-Q covering the third quarter of 2026 will be filed today. I will now turn the call over to Dr. Musunuri.

Shankar Musunuri

Thank you, Chris, and good morning, everyone. The third quarter was a quarter of execution for Ocugen. We now have all 3 of our late-stage modifier gene therapy programs in Phase III. We advanced our business development strategy, and we established a presence in Europe to support pre-commercial activities. With 3 Phase III programs underway, we're executing against a clear strategy to advance our pipeline and build our global presence through strategic partnerships to bring our therapies to patients around the world.

Our modifier gene therapy platform remains the foundation of everything we do. Rather than targeting a single mutation, it is designed to address the underlying biology of complex retinal disease by restoring balance across multiple gene networks. The platform is gene agnostic. It is multifactorial, and it is designed to deliver durable benefit from a single onetime injection. That approach is what allows us to advance 1 platform across 3 major causes of blindness, geographic atrophy, retinitis pigmentosa and Stargardt disease.

We remain on track to file 3 BLAs by 2028, and our next major milestone is clear. OCU400 is expected to be the first of our Phase III programs to read out with top line data anticipated in the first quarter of 2027. Let me walk you through the progress made across each program this quarter. I will begin OCU400 in RP, followed by OCU410ST in Stargardt disease and OCU410 in GA before handing the call to Rita for the financial update.

In OCU400 for RP, this was an especially productive quarter for the program with progress on clinical, regulatory and commercial fronts. On the clinical side, we completed enrollment in our Phase III liMeliGhT trial with 140 patients. Top line data from the trial are expected in the first quarter of 2027, followed by our planned BLA submission. Our process performance qualification batches are complete, which supports both our BLA and the commercial launch supply of OCU400.

On the commercial side, in October, we completed an exclusive OCU400 license deal for the Middle East and North Africa with Roots Pharmaceutical, finalizing the binding term sheet we announced in July. Under the agreement, Ocugen is eligible for up to $4 million in combined upfront and potential initial development milestone payments, up to $255 million in potential sales milestones and a 22% royalty on net sales. And we will manufacture commercial supply. This is our second regional OCU400 license following our agreement with Kwangdong Pharmaceutical in South Korea.

On the regulatory and access side, OCU400 received provisional approval and priority designation in the Bahamas under its Longevity and Regenerative Therapies Act or LARTA. We have executed an agreement with a local partner, the Global Alliance for Regenerative Medicine, to coordinate and manage patient care, and we are progressing site readiness and preparation for full LARTA approval. We are advancing towards potential patient enrollment as early as year-end. This pathway is a meaningful step towards expanding access for RP patients while potentially generating commercial revenues.

Taken together, the access pathway to the Bahamas and the Roots license agreement reflect a deliberate strategy. We intend to bring OCU400 to patients in the United States to extend its reach internationally through regional partnerships that add commercial scale without requiring us to build our own infrastructure in every market. As we build that international reach, we remain focused on the clinical development pathway that will underpin our efforts to bring OCU400 to patients in major markets.

Our Phase I/II experience also provides important context for the Phase III liMeliGhT study. In a post-hoc analysis of 7 Phase I/II subjects meeting Phase III eligibility criteria, 7 treated eyes or 71.4% are projected to meet the Phase III responder threshold of at least a 2-level improvement on the LDNA scale from baseline at week 52. LDNA measures functional vision with a wider range and final resolution than the mobility test used in Phase I/II, addressing the ceiling effect seen in the study.

Our previously reported 3-year follow-up adds a longer-term perspective, 7 out of 8 evaluable concentrate treated subjects or 88% showed improvement or preservation of LLVA compared with untreated eyes at year 3 with no serious adverse events related to OCU400 reported through 3 years. Separately, our Phase III power analysis shows that even at hypothetical treatment responder rate of just 20% compared with 1% in untreated controls, the model estimates 93.2% power to detect the difference on the primary endpoint. We believe these data support both the design of liMeliGhT and the potential of OCU400, and we look forward to top line results in the first quarter of 2027.

Turning to OCU410ST for Stargardt disease, a pediatric onset retinal disorder for which there are no approved therapies. We continue to advance our pivotal Phase II/III GARDian trial per protocol, and we anticipate top line data in the second quarter of 2027 with the BLA submission to follow. Finally, OCU410 GA, an advanced form of dry age-related macular degeneration and our largest commercial opportunity. This quarter marked an important transition for the program into Phase III.

In September, we announced the first patient dosed in ArMaDa3, our global Phase III clinical trial. We plan to complete trial enrollment next year with a target BLA filing in 2028. ArMaDa3 is a 237-subject study that randomizes patients 2:1 to a single subretinal injection of OCU410 or untreated control across the United States, Canada and Europe. The primary endpoint is GA lesion growth over 12 months. This is the first pivotal gene therapy trial in geographic atrophy.

Today's approved GA therapies target a single pathway and require ongoing intravitreal injections as often as monthly. OCU410 is designed to address multiple pathways underlying the disease with a single onetime treatment. We believe that combination of mechanism and durability gives OCU410 a clear competitive advantage. Here is a snapshot of the market opportunity across our 3 late-stage development programs. With OCU410 for GA represents our largest commercial opportunity, we believe all 3 programs have the potential to generate significant revenue while addressing areas of substantial unmet medical need. With that, I will turn the call over to Rita for the financial update. Rita?

Rita Johnson-Greene

Thank you, Shankar. Good morning, everyone. Our cash, cash equivalents, restricted cash and short-term investments totaled $84.6 million as of September 30, 2026. We expect this balance to support our cash runway into 2028, which funds 2 of our 3 late-stage programs through their anticipated BLA filings. We had 339.3 million shares of common stock outstanding as of September 30, 2026.

Total operating expenses for the 3 months ended September 30, 2026, were $19.7 million and included research and development expenses of $12.5 million and general and administrative expenses of $7.2 million.

This compared to total operating expenses for the 3 months ended September 30, 2025, of $19.4 million, which included research and development expenses of $11.1 million and general and administrative expenses of $8.2 million. Ocugen reported a $0.01 net loss per common share for the 3 months ended September 30, 2026, compared to a $0.07 net loss per common share for the 3 months ended September 30, 2025.

Total operating expenses for the 9 months ended September 30, 2026, were $57 million and included research and development expenses of $34.4 million and general and administrative expenses of $22.6 million compared to total operating expenses for the 9 months ended September 30, 2025, of $50.5 million that included research and development expenses of $29.1 million and general and administrative expenses of $24.4 million. Ocugen reported a $0.14 net loss per common share for the 9 months ended September 30, 2026, compared to a $0.17 net loss per common share for the 9 months ended September 30, 2025. That concludes my financial update. Shankar, back to you.

Shankar Musunuri

Thank you, Rita. The progress we made this quarter reinforces our confidence in the path ahead. We moved OCU410 into Phase III with the first patient dosed in ArMaDa3. We completed our regional licensing agreement for OCU400 in the Middle East and North Africa. We opened a pathway to treat RP patients in the Bahamas, and we established a European presence to support our development and commercialization in that region. Each of these moves supports the same objective, which is advancing 3 late-stage gene therapy programs toward approval and bringing them to patients around the world.

Looking ahead, our focus is firmly on execution. The most important near-term catalyst is top line data from OCU400 in the first quarter of 2027, followed by our planned BLA submission. We then expect top line from OCU410ST in the second quarter of 2027. We remain on track to deliver 3 BLAs over the next 3 years. I want to thank our employees, our investigators and the patients who have placed their trust in us as well as our shareholders for their continued support of our mission to advance cures for blindness. We will now open the call for questions. Operator?

Operator

[Operator Instructions] Your first question comes from the line of Swayampakula Ramakanth with H.C. Wainwright.

質疑応答

Swayampakula Ramakanth

This is RK from H.C. Wainwright. The rest of the team. Just wanted to understand a little bit about the ST program, the Stargardt program, Shankar, in September, you had the DMC recommendation come to you. And when will the full cohort actually complete the follow-up period, the 8-month follow-up period? And beyond that, what sort of data do you need to make your next decision? And also, I think you're still planning to file in the second quarter of '27. So what else needs to get resolved by then?

Shankar Musunuri

Yes. Thank you, RK. Yes, the protocol, it targeted for 12 months read in the second quarter. I'll let our CMO, Dr. Genead, answer the questions. Go ahead.

Mohamed Genead

Thank you, Shankar. So as we described in the protocol, this interim analysis was prescribed in the original protocol we discussed with the agency. And it was a part of our adaptive design to look at any adjustment needed during the trial conduction. And the DMC was assembled, as you are aware, and they recommended to continue the study without modification.

So us, as a company, we will -- all the team are still blinded. We are continuing the study until month 12 and looking forward to release the data by the second half or second quarter next year in 2027. As you are aware, too, about this interim analysis was done in a small cohort of patients in the study to an early time point, the month 8 versus month 12 as the primary.

And as you know, for Stargardt disease as a disease, it is a slowly progressive retinal disease. So we wouldn't expect to see too much at month 8 versus month 12. In addition, as you know, with gene therapy product, the expression of the transgene and the product take time. And then with what we are trying to do here, we're looking at the data at month 12 per the original design on the pre-existing protocol.

Swayampakula Ramakanth

Okay. So if I understand this right, so I know I misspoke, I said second quarter '27 filing, the readout is the second quarter, just as you said. So once you have all that data, you anticipate meeting with the FDA before moving forward? Or what other steps would you be taking once you get that 12-month data point just as you suggested?

Rita Johnson-Greene

Yes.

Shankar Musunuri

Yes. I think, yes, that's the standard operating procedure, RK. When you get the top line data, you need to discuss with the agency first. Then you need to -- if the data falls the way you anticipate following the protocol and SAP analysis, what we agreed with the FDA, obviously, then we move on to the next step, have a pre-BLA meeting and move on to filing the BLA.

Swayampakula Ramakanth

Fantastic. Then regarding the LARTA approval in the Bahamas, first of all, I think it's a good opportunity for you folks to get something commercial and also see how the -- how patients react or adopt in the real world, which is fantastic. So when you say by year-end, by the end of this year, what would we see in terms of -- is it just going to be full approval and potentially somebody lining up to have their initial surgery? Or you just will have the full approval and the hospital will be trying to get somebody in -- get a surgery done in the new -- in '27, I mean.

Shankar Musunuri

Yes. So RK, I'll let -- we have our commercial head here, and he can tell it in answer.

Chris Clark

So right, RK, nice to hear from you. So the LARTA program in the Bahamas really represents something really innovative across our industry. And yes, in addition, right now, we have the conditional provisional approval. But by the end of the year, we can expect a full approval. We don't necessarily share forecasts on patients, especially for EAP, but stay tuned, and we will be sharing more catalysts on that specific program.

Operator

Your next question comes from the line of Robert LeBoyer with Noble. Your line is open.

Robert LeBoyer

My question only has to do with the 410 program. And good news that you initiated patient treatment during the quarter. And my understanding is that it's a 2:1 randomization, but I don't have anything about any kind of interim analysis. Is there anything planned like that?

Shankar Musunuri

Yes. As we -- Robert, as we -- this is a 1-year trial, that means after recruitment, we're going to monitor patients for 1 year, looking for primary and secondary analysis. And currently, we're not planning interim.

Robert LeBoyer

Okay. Are there any milestones for recruitment that you're planning to announce? Or is it just when you complete the full enrollment?

Shankar Musunuri

I mean our goal is to complete enrollment in 2027, in line for BLA filing in 2028.

Robert LeBoyer

Okay. Great. So everything is on track.

Shankar Musunuri

Yes.

Operator

Your next question comes from the line of Michael Okunewitch with Maxim Group. Your line is open.

Michael Okunewitch

I'd like to just talk a little bit more about the upcoming DMC review in Stargardt and provide some context on what the issues raised in the prior one. Did this have anything to do with the magnitude of treatment effect over the time period? Was it fluctuation in functional measures over that period with a smaller population? Or the statistical noise at baseline that kind of led them to say we want to see the full picture before making a decision?

Mohamed Genead

Yes. Thanks for the question. So it's all of the above, but let me give more specific. Let's just go back to the disease progression because this is important to understand. Stargardt, as you know, it's one of those slowly progressive retinal genetic diseases, and it takes time to see any delta and 8 months was quite an early time point. This is number 1.

Number 2, if you remember, the interim analysis also, we look at only a snapshot of certain patients, only -- even less than half of the patients in that trial. So the small N definitely will determine this outcome. The other big piece was in this analysis, the heterogeneity we saw at the baseline of those patients. Remember, still less than half of the patients enrolled in the trial and the baseline characteristic was just heterogenous. It was quite variable from small to large. So we cannot conclude, we cannot claim anything as well.

Lastly, and I want to also reiterate this part, this was not an efficacy analysis was a part of the adaptive design to look at any need to do any adjustment on the trial design, increase duration, increase the number of patients and the DMC recommended to continue without any modification. And for us, as a company, we will continue to follow the patient per the existing protocol to month 12, and then we'll look at the data and then the full set of the patient at month 12.

Michael Okunewitch

And just how confident are you that the N equals 63 total size of the study is large enough to ameliorate any of those baseline differences?

Mohamed Genead

Yes. Good point. Based on the prior data from the Phase I/II we saw treatment effect in a small number of patients was N of 9. We saw this 54% reduction or slower lesion growth in the treated eyes versus the untreated also, we saw functional benefit on the visual acuity.

Back to your question about the N of 63, it will be the full set of patients. The study was powered based on the early assumption to show significance at month 12 was close to 90% powering. And also, we should see like more moderate population, the baseline character should be balanced between the control and treated that also will drive a different value. In addition, we have a longer time point, right, month 12 versus month 8, and we saw the delta in our early study at month 12 versus month 8.

Michael Okunewitch

All right. And then just 1 more before I hop back in the queue. I want to switch gears and talk a little bit about the Bahamas program. In particular, what the payment model looks like for under LARTA? And who is the target patient for that? Would that be patients that live locally in the Bahamas? Would it be people flying in for potential medical tourism to get early access to the treatment? Can you just provide a bit more color on what that looks like?

Shankar Musunuri

Yes. I'll let Abhi answer that. Go ahead.

Abhi Gupta

Yes. So I think first on the program is open globally. And yes, it's looking at the Bahama population, but much more broader. So it is truly like a global program. And so secondly, the way that the model works in terms of pricing is something that's consistent with the way that the Bahama system is set up. And so it is a little bit more towards commercial than it is towards clinical, and that's something specific that the Bahama regulatory body enables Ocugen to do.

Shankar Musunuri

So Michael, just to recap, anybody globally who is eligible and they can go get the treatment at this stage under this approval.

Michael Okunewitch

All right. Would pricing match what you would be targeting for U.S. or international pricing? Or is this more of an exploratory program?

Chris Clark

That is correct. It would be. Yes, it would be.

Shankar Musunuri

It would be matching U.S. price. Yes.

Operator

Your next question comes from the line of Elemer Piros with Lucid Capital Markets. Your line is open.

Elemer Piros

Just 1 more follow-up on the Bahamas treatment availability. How would patients learn about that this is available in the Bahamas for them? What sort of marketing effort if you are thinking of to undertake?

Abhi Gupta

Yes. As an Ocugen, we don't market EAPs, but we are working with a local vendor that's responsible for all patient-related activities. And so they would be the one who are educating not only patients, but KOLs, including the community about this world's first option for a global EAP...

Elemer Piros

Okay. And coming back to the interim analysis, was the DMC equipped with trying to model potential outcome if they were to normalize the baseline characteristics to be even between the 2 arms?

Mohamed Genead

So DMC, as you know, it's an advisory body and also independent unblinded body assigned to the study. The DMC had a very clear per protocol assignment. They were looking at -- as part of the adaptive design, they're looking at 3 outcomes. Again, it's not an efficacy outcome. It's just part of the adaptive design for sample size recalculation or adjustment if needed.

We had access to the unblinded data. They look at all the efficacy, including the primary lesion size and all the other functional, including also the genetic correlation. So they were to make a decision based on data. As I said before, and this is important again to reiterate, the sample size was small, early time point and also we had some heterogenicity as a baseline characteristics in that interim analysis.

The good news also, remember, they had an opportunity now to do different outcomes. They continue the study without modification because we believe with all full of patients at month 12, the heterogenicity and all this baseline heterogeneity will be normalized at month 12. And this is also we believe based on our data and also patient selection in the trial.

Elemer Piros

And so you can confirm that since you have all the baseline characteristics of the patients that the full data set is going to be well balanced between the 2 treatment arms. That's correct.

Operator

Your next question comes from the line of Leland Gershell with Oppenheimer & Co. Your line is open.

Leland Gershell

Just want to ask, I think it was asked earlier on the Stargardt, the 8-month analysis. If we -- so just to be clear, will we -- will you the company have input from the DMC on their full analysis of the enrollment at 8 months? And will that -- could that impact the study? I just wasn't clear. I know that was asked in an earlier question, but it wasn't clear your answer. If you could just inform there.

Mohamed Genead

No, it's a pleasure. And no, so the DMC is independent, but they have access to the unblinded data. We don't. As a company, the study is still blinded and all the team are running the study is still blinded. If you're asking will the DMC will do another analysis at 8 months with a full data set? No.

We are continuing the study until month 12, and this is where the time is going to look at all the data from the trial as a company by month 12. And this is part of the design of the study. This is a pre-existing protocol. This what we communicate to the agency. And we believe the reason why because 8 months is an early time point, and we have a small number of patients. So we want to see the full set of patients at month 12 for the existing protocol. Did I answer your question?

Leland Gershell

Yes. No, that's very helpful. And I guess a question in terms of the final data when you have them, if you could just remind us what you expect to see based on performance in the past with 410ST, what's the size of lesion reduction you'd expect versus comparator? And given this is a dynamic space, kind of to be competitive here, what size reduction would you want to see given the other therapies being developed in the space?

Mohamed Genead

Yes. So the primary analysis for this study was based on the atrophic lesion size change over time until month 12. And the size was close to 90% to look at that delta. The delta you're talking about close to 25% delta. If you remember, the Phase I/II data we shared earlier or we discussed earlier, we showed close to 54% reduction on the lesion size, but this was an early study, was also a small number of patients, and that was our benchmark, but we went more conservative and we talked about 25% delta between the treated and the control eyes to show statistical significance.

That's on the lesion size growth. Also, we look at -- we're also looking at other functional endpoints, including the BCVA and other functional endpoint in the study. And we saw earlier in our Phase I/II functional benefit as well from baseline to month 12 up to 6-letter gain in the treated eye versus the contra untreated eyes. So we believe based on this earlier data, we should also see similar trend on the structural functional improvement in those subjects.

Operator

Your next question comes from the line of Whitney Ijem with Canaccord Genuity. Your line is open.

Whitney Ijem

On OCU400 and the powering, I guess, can you remind us from the Phase I/II experience, first of all, how are you defining responder in the Phase I/II as it relates to the mobility testing? And what are the differences between how you're defining it there versus the Phase III? And then remind us what was the responder rate, particularly in the RHO population in Phase I/II and remind us what percent of the Phase III are RHO patients? That's part 1. And then I have a follow-up. Sorry for so many of the questions.

Mohamed Genead

Whitney, thank you for your question. Regarding the Phase I/II, what we saw from the Phase I/II in the RP, the OCU400 program, this was N of 18 subject. Remember, we did some subgroup analysis. But what we saw based on the mobility test, and we used the same test externally used for their approval, which we called the Multi-Luminance Mobility Test, MLMT.

What we saw in that study in the treated eye who received OCU400, we saw 43% of the eyes did improve 2 lux levels on the mobility test, which is the approvable endpoint for RP versus 0% of the control untreated eyes did show that. And then when we projected this, to our Phase III mobility test, which we call the LDNA, which is very similar to the MLMT, but it's a broader range, 10 lux level versus 6, but using the same methodology, the 2 lux level improvement.

And our projection was at that time, we went from 42% up to -- at 43% up to 71% improvement in the treated eye versus 0% in the control. So when we built our Phase III assumption was based on a very conservative analysis. We didn't say we're going to go with 71% improvement. We said the treated eye will -- the assumption was 50% improvement in the treated eye versus 10% control. And remember, in the Phase I/II, the control was 0%.

So if you went with a 50% treated versus the 10% control, the delta is 40%, that will give us 99% power in the study, okay? And if you look at this in another way, right, if you look at the half full or half empty, right, even if the treated eye showed only 20% treatment effect, which is not our assumptions, right? This is not our assumption. But if you went to 20% and the control did behave exactly the way it behaved in the Phase I/II, which is like close to 0%, 1%, we're still hitting 93% power. So what we're saying here in a different way, we have a very high confidence with OCU400, especially the study is well powered to show statistical significance at month 12. Using the 2 lux improvement, the same 1 used for the approval. Did I answer your question?

Whitney Ijem

Got it. That's really helpful. Yes, that's really helpful. And just on the RHO bit, am I remembering correctly that on the Phase I/II, the responder rate in the RHO subgroup was higher? Either way, I guess, can you remind us what percent of patients in the pivotal are RHO patients?

Mohamed Genead

Yes. So for the pivotal trials, liMeliGhT, just to remind, it's 140 subjects were enrolled, randomized to 2:1, 92 was treated and 48 was untreated or the control arm. The reduction we have like we have rhodopsin patients in the Phase III trials, but the majority will be non-rhodopsin, we call gene agnostic. But we have a very large number of patients in the Phase III trials who have rhodopsin mutation. And you're correct, we saw a very positive trend in the rhodopsin subpopulation in the Phase I/II. So we are expecting to replicate if not better in our Phase III trials.

Whitney Ijem

Got it. All right. That's helpful. And then just the last question is just on timing. I believe you announced completion of enrollment in the study in the beginning of March. Can you just help us understand like how quickly after enrollment was that final patient treated? I'm just trying to get -- and how long you think it might take to kind of organize, clean up the database, et cetera, before you can lock it and announce top line?

Shankar Musunuri

I mean, as we stated before, Whitney, we're ready to do all that. That's why we're doing a lot of work behind the scenes. As we announced before, first quarter -- by end of first quarter, we'll be able to announce that top line.

Operator

I will now turn the call back over to Shankar Musunuri for closing remarks.

Shankar Musunuri

Thank you. Thank you for attending another good progressive earnings call today. Thanks to all our shareholders, patients, our employees for supporting Ocugen. Thank you.

Operator

Ladies and gentlemen, that concludes today's call. Thank you all for joining. You may now disconnect.