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![GeneInvesting Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1246632233579896833.png) Gene Investing w/Anthony 🧬 [@GeneInvesting](/creator/twitter/GeneInvesting) on x 13.6K followers
Created: 2025-06-16 14:57:26 UTC

Common questions by @PersimmonTI 

My reply:

1️⃣ Hemophilia A ($BMRN's Roctavian)

•Initial FVIII levels look good, but rapid decline over time is well documented.
•Pivotal trial showed median FVIII expression dropped from XX IU/dL at year X to ~24 IU/dL by year 2, and the trend continues downward.
•Many patients require re-initiation of prophylaxis after a few years.
•Durability concerns are a major reason for slow uptake post-approval.

2️⃣ NTLA-2002 is gene knockout via CRISPR-Cas9, not viral vector-based gene addition. 

That means no episomal DNA, no reliance on hepatocyte turnover, and theoretically, permanent suppression of kallikrein. One-time, durable, and clean mechanism of action.

3️⃣ No Immunosuppression

Unlike AAV gene therapies for hemophilia that often require immune suppression (e.g., $QURE, $SGMO), Intellia’s platform has shown no need for steroids or prophylactic immunosuppression — a huge win in terms of tolerability and scalability.

4️⃣ Unmet Need Remains in HAE, Even Post-KALV

Yes, $KALV and $PHVS are strong competitors, but they’re chronic and likely expensive. A one-time curative therapy that safely drops attack rates to zero or near-zero is highly differentiated and what patients truly desire.

5️⃣ Simplified Path to Adoption vs. Hemophilia

Hemophilia gene therapy uptake has been sluggish due to safety baggage/screening process, complex factor replacement history, and entrenched physician/patient habits. HAE patients are typically younger, diagnosed early, and highly motivated for a functional cure.

![](https://pbs.twimg.com/media/GtksbjMXsAAFGxC.jpg)

XXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1934626375131967717/c:line.svg)

**Related Topics**
[$bmrns](/topic/$bmrns)
[$reymi](/topic/$reymi)
[investment](/topic/investment)

[Post Link](https://x.com/GeneInvesting/status/1934626375131967717)

[GUEST ACCESS MODE: Data is scrambled or limited to provide examples. Make requests using your API key to unlock full data. Check https://lunarcrush.ai/auth for authentication information.]

GeneInvesting Avatar Gene Investing w/Anthony 🧬 @GeneInvesting on x 13.6K followers Created: 2025-06-16 14:57:26 UTC

Common questions by @PersimmonTI

My reply:

1️⃣ Hemophilia A ($BMRN's Roctavian)

•Initial FVIII levels look good, but rapid decline over time is well documented. •Pivotal trial showed median FVIII expression dropped from XX IU/dL at year X to ~24 IU/dL by year 2, and the trend continues downward. •Many patients require re-initiation of prophylaxis after a few years. •Durability concerns are a major reason for slow uptake post-approval.

2️⃣ NTLA-2002 is gene knockout via CRISPR-Cas9, not viral vector-based gene addition.

That means no episomal DNA, no reliance on hepatocyte turnover, and theoretically, permanent suppression of kallikrein. One-time, durable, and clean mechanism of action.

3️⃣ No Immunosuppression

Unlike AAV gene therapies for hemophilia that often require immune suppression (e.g., $QURE, $SGMO), Intellia’s platform has shown no need for steroids or prophylactic immunosuppression — a huge win in terms of tolerability and scalability.

4️⃣ Unmet Need Remains in HAE, Even Post-KALV

Yes, $KALV and $PHVS are strong competitors, but they’re chronic and likely expensive. A one-time curative therapy that safely drops attack rates to zero or near-zero is highly differentiated and what patients truly desire.

5️⃣ Simplified Path to Adoption vs. Hemophilia

Hemophilia gene therapy uptake has been sluggish due to safety baggage/screening process, complex factor replacement history, and entrenched physician/patient habits. HAE patients are typically younger, diagnosed early, and highly motivated for a functional cure.

XXXXX engagements

Engagements Line Chart

Related Topics $bmrns $reymi investment

Post Link

post/tweet::1934626375131967717
/post/tweet::1934626375131967717