FDA Catalyst Intelligence · Biotech Investors
PDUFA Pulse
MONDAY · APRIL 20, 2026
PoA = probability-of-approval band (directional only; not FDA guidance)
► The Frame · Apr 20 – May 10
“TVTX PRINTS → GRCE IS NEXT”

Last week cleared another real FDA clock. TVTX printed approved on April 13 for FSGS, so it comes off the forward board. That leaves a tighter FDA stack: GRCE, MRK, AXSM, and ARGX.

This is cleaner again. The immediate question is no longer whether TVTX gets through. It is what prints next, and that starts with GRCE on April 23.

 
► What Changed Since Last Monday
TVTX / FILSPARI® — APPROVED · Apr 13
Approved to reduce proteinuria in patients with FSGS — the first FDA-approved treatment for the condition. This event is now resolved and no longer belongs in the forward queue.
 
► Live FDA Decision Board · Next ~3 Weeks
Date Ticker Event PoA
Thu Apr 23 GRCE GTx-104 70%
Tue Apr 28 MRK doravirine / islatravir 85%
Thu Apr 30 AXSM AXS-05 / Alzheimer’s agitation 78%
Sun May 10 ARGX VYVGART® / seroneg. gMG 87%
Board dates and PoAs reflect the attached weekly calendar and current company/FDA disclosures.
 
► Near-Term Focus
GRCE $GRCE · GTx-104 · aSAH PDUFA: Thu Apr 23  PoA 70%

This is now the next real hard clock. Still underfollowed, still real, and exactly the kind of name that belongs in a PDUFA-first product: a defined FDA decision with a tangible regulatory setup, not just conference noise or pipeline drift. The appeal here is straightforward — new IV nimodipine formulation, a rare neurocritical-care setting, and a live NDA review this week.

MRK $MRK · doravirine / islatravir · HIV-1 PDUFA: Tue Apr 28  PoA 85%

One of the cleaner late-April setups. Large sponsor, familiar regulatory terrain, and a comparatively straightforward read versus the more contentious small-cap binaries that have moved through the board over the last few weeks.

AXSM $AXSM · AXS-05 · Alzheimer’s agitation PDUFA: Thu Apr 30  PoA 78%

Priority Review, known asset, and a meaningful label-expansion decision in a closely watched CNS category. It stays squarely on the core board as one of the higher-interest names on the outer edge of April.

 
► Watchlist · Just Beyond the Next Three
ARGX $ARGX · VYVGART® · seronegative gMG PDUFA: Sun May 10  PoA 87%

Still one of the cleaner clocks at the far edge of the current window: same franchise, expanded population, strong sponsor, and an already disclosed May 10 action date.

 
► Weekly Posture

The board is tighter again. TVTX is off. The next real work shifts to:

GRCE MRK AXSM ARGX

That is the queue.

Informational only · Not investment advice · Biotech carries risk of total loss

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