Jacob Plieth

Jacob Plieth

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Biotech journalist (focus on oncology); provides sharp analysis of cancer drug data and industry developments.

CTMX Soars 660% Ahead of Masked ADC Catalyst
SocialMar 4, 2026

CTMX Soars 660% Ahead of Masked ADC Catalyst

$CTMX, +660% in 12 months, approaches its masked ADC catalyst. Via @ApexOnco -> https://t.co/oQI1iQiV4N ( $JANX -58% in the same timeframe)

By Jacob Plieth
Flare's GU26 Targets Undruggable PPAR‑γ, Yet Caveats Remain
SocialMar 2, 2026

Flare's GU26 Targets Undruggable PPAR‑γ, Yet Caveats Remain

Who's heard of Flare Therapeutics? #GU26 late-breaker shows promise in hitting "undruggable" PPAR-γ target, with a few major caveats. Via @ApexOnco -> https://t.co/1GepvywtL0

By Jacob Plieth
MRK's Ovarian Cancer Claim Rejected by FDA, EMA
SocialMar 2, 2026

MRK's Ovarian Cancer Claim Rejected by FDA, EMA

$MRK claims a survival benefit in ovarian cancer irrespective of PD-L1 status, but FDA & EMA say BS. Via @ApexOnco -> https://t.co/Cld1O7Uuvp #ESGO26

By Jacob Plieth
Welireg Poised to Broaden Reach per GU26 Data
SocialFeb 28, 2026

Welireg Poised to Broaden Reach per GU26 Data

$MRK Welireg could be about to expand its reach at last. #GU26 data via @ApexOnco with relevance to $RCUS -> https://t.co/k59284INdK

By Jacob Plieth
RVMD Switches PRMT5 Partner From T
SocialFeb 26, 2026

RVMD Switches PRMT5 Partner From T

$RVMD was collaborating with $TNGX in PRMT5, but now it's working with $BMY (remember that ex MRTX project?). Via @ByMadeleineA @ApexOnco -> https://t.co/mGZjKOiB7p (And $AMGN still dose optimising.)

By Jacob Plieth
BCAX's Phase 3 Ficera Dose Raises Critical Concerns
SocialFeb 23, 2026

BCAX's Phase 3 Ficera Dose Raises Critical Concerns

Why is $BCAX testing a ficera dose in phase 3 that it now says isn't optimal (and other uncomfortable questions)? Via @ApexOnco -> https://t.co/mLWKP6AAZ9 $JNJ $GMAB

By Jacob Plieth
ASCO GU26 Highlights Litespark, Keynote B15, Flare
SocialFeb 12, 2026

ASCO GU26 Highlights Litespark, Keynote B15, Flare

Key late-breakers at Asco #GU26 include Litespark-011 & 022, Keynote-B15... and who's heard of Flare Therapeutics? Via @ApexOnco -> https://t.co/bXcANMQu5m $MRK $PFE $ALMPF $CGON $VIR

By Jacob Plieth
E
SocialFeb 9, 2026

E

So $LLY not interested in oncology applications of Orna's in vivo Car-T? $ABBV $AZN $BMY $GILD https://t.co/wB3rR5LID8

By Jacob Plieth
China Limits Keytruda to dMMR, US Not Restricted
SocialFeb 6, 2026

China Limits Keytruda to dMMR, US Not Restricted

Interesting difference: the corresponding US approval has no restriction to dMMR (remember PFS HR=0.60 in pMMR, but 0.30 in dMMR) $MRK

By Jacob Plieth
ApexOnco IPO Highlights Valuation Benchmarks for Biotech
SocialFeb 5, 2026

ApexOnco IPO Highlights Valuation Benchmarks for Biotech

$EIKN prices at $18/share, to raise $381m at a $972m market cap. Here's @ApexOnco on what this IPO tells us: https://t.co/OYpmTI21qI

By Jacob Plieth
Novartis Halts PIT565 T‑cell Engager Development
SocialFeb 4, 2026

Novartis Halts PIT565 T‑cell Engager Development

Confirmned discontinuation of $NVS PIT565, which seems to be a specifically targeted T-cell engager (also hit CD2). cf $AZN Titan platform.

By Jacob Plieth
DSNKY's DS-3790 DXd ADC Begins Clinical Trials
SocialFeb 4, 2026

DSNKY's DS-3790 DXd ADC Begins Clinical Trials

$DSNKY's first DXd ADC for haematology, DS-3790, enters the clinic. As I reported last November: https://t.co/9CcbISqbqK

By Jacob Plieth
New Antibody‑Drug Conjugates Unveiled in Latest Scoop
SocialFeb 4, 2026

New Antibody‑Drug Conjugates Unveiled in Latest Scoop

Several scoops among the latest ADC names. Via @ApexOnco with H/T to @raffcolo -> https://t.co/JxDmId0Q0A

By Jacob Plieth
MRK's Interpath-001 Study Fully Enrolled
SocialFeb 4, 2026

MRK's Interpath-001 Study Fully Enrolled

$MRK confirming that Interpath-001 study of $MRNA partnered intismeran autogene is "ongoing & fully enrolled". No further guidance as to timing of results, due some time in 2026. My earlier take on what to expect: https://t.co/9Pk3JK8TLs

By Jacob Plieth
Leaked Data Reveals Mechanisms of JNJ and MRK ADCs
SocialJan 29, 2026

Leaked Data Reveals Mechanisms of JNJ and MRK ADCs

With a tipoff from a friend, and some info that probably shouldn't have been posted in a trial registry, the mechanisms of ADCs JNJ-95437446 $JNJ & SKB571/ MK-2750 $MRK have been revealed. Quite amazing given the recent $GMAB news. Via...

By Jacob Plieth
SNY Drops Alphamedix, Opening Window for CATX
SocialJan 29, 2026

SNY Drops Alphamedix, Opening Window for CATX

Looks like $SNY discontinued Alphamedix/ SAR447873, licensed in Sep 2024 from Radiomedix & Orano Med, h/t B Riley. @ByMadeleineA covered it at #Esmo25 and flagged dysphagia & renal tox. https://t.co/6L2O0c5cOA Good news for $CATX?

By Jacob Plieth
Qilu Mirrors JNJ with New CD79b‑CD20 Trispecific
SocialJan 15, 2026

Qilu Mirrors JNJ with New CD79b‑CD20 Trispecific

Qilu appears to be aping $JNJ in trispecific T-cell engagers. First BCMA x GPRC5D, now CD79b x CD20. Via @ApexOnco -> https://t.co/d4pBcl0MuF

By Jacob Plieth
ATRA Rallies at JPM26, Eyes Upcoming FDA CRL
SocialJan 12, 2026

ATRA Rallies at JPM26, Eyes Upcoming FDA CRL

#JPM26 off to a great start for $ATRA. Looking forward to the FDA publishing the latest CRL.

By Jacob Plieth
Oncology IPO Outspends AKTS, $800M Funding, $205M R&D
SocialJan 12, 2026

Oncology IPO Outspends AKTS, $800M Funding, $205M R&D

So a nice first day trading for $AKTS, +24%, but here comes an oncology IPO of a quite different order: Eikon has had $800m private money invested in it so far (vs $140m for AKTS), and blew $205m on R&D...

By Jacob Plieth