Jacob Plieth

Jacob Plieth

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

RG6735 Identified as New $RHHBY Phase‑1 Asset
SocialApr 23, 2026

RG6735 Identified as New $RHHBY Phase‑1 Asset

Any idea what RG6735 is? Looks like a new $RHHBY code for sth that went into phase 1 earlier under a different name. https://t.co/7Cb5Ft2BWC

By Jacob Plieth
LLY's Second in Vivo CAR‑T Deal via Kelonia Buyout
SocialApr 20, 2026

LLY's Second in Vivo CAR‑T Deal via Kelonia Buyout

Kelonia turns #ASH25 late-breaker into buyout, with $LLY's second move into in vivo Car-T. Via @ApexOnco -> https://t.co/NPhdnuhPu3 $AZN $GILD

By Jacob Plieth
LLY Acquires Kelonia for $3.25bn After ASH25 Insights
SocialApr 20, 2026

LLY Acquires Kelonia for $3.25bn After ASH25 Insights

It's official: $LLY buying Kelonia for $3.25bn + milestones. @ByMadeleineA take on the #ASH25 dataset that triggered this move: https://t.co/nVUNlq7YlO

By Jacob Plieth
JNJ's HLD-0117 Enters Phase 1, Target Unreve
SocialApr 17, 2026

JNJ's HLD-0117 Enters Phase 1, Target Unreve

Second $JNJ ex-Halda "riptac", HLD-0117, goes into phase 1. Previously only known as "breast cancer riptac", target still undisclosed https://t.co/aJRe55AgYH

By Jacob Plieth
AZD4956
SocialApr 17, 2026

AZD4956

Just disclosed in #AACR26 abstracts: $AZN AZD4956 = DNA pol theta inhibitor. My story from when it entered phase 1/2 Parthenon study +/-saruparib -> https://t.co/bHoOKqd7da

By Jacob Plieth
RVMD and ALLO Illustrate Biotech's Enduring Success Struggle
SocialApr 15, 2026

RVMD and ALLO Illustrate Biotech's Enduring Success Struggle

Why $RVMD & $ALLO are a microcosm of biotech's historic struggle for success. Some musings from me on @ApexOnco -> https://t.co/3lWgzQplvc

By Jacob Plieth
ALLO May
SocialApr 13, 2026

ALLO May

Has $ALLO found a niche for allo Car-T at last? It's early days, so the answer is maybe. Via @APEXONCO -> https://t.co/bO3A1hpAY8

By Jacob Plieth
NVS Sells Darovasertib for $6M in Cash, Stock
SocialApr 13, 2026

NVS Sells Darovasertib for $6M in Cash, Stock

Let's remember again that $NVS dumped off darovasertib for $2.5m in cash + $3.5m in $IDYA series B preferred stock.

By Jacob Plieth
ALLO's Alpha-3 DLBCL Data Set to Spark Pre‑Market Move
SocialApr 13, 2026

ALLO's Alpha-3 DLBCL Data Set to Spark Pre‑Market Move

Key $ALLO catalyst coming pre market today, with first data from cema-cel's Alpha-3 study in DLBCL consolidation. What to look for: https://t.co/a19BVEppqP

By Jacob Plieth
Darovasertib Shows Promise in Optimum-02 Uveal Melanoma Trial
SocialApr 13, 2026

Darovasertib Shows Promise in Optimum-02 Uveal Melanoma Trial

$IDYA darovasertib data from registrational Optimum-02 trial in uveal melanoma are out. What to look for: https://t.co/1LQa0X6xJa

By Jacob Plieth
Investors Demand Immediate Release of Market-Sensitive Data
SocialApr 10, 2026

Investors Demand Immediate Release of Market-Sensitive Data

This is getting quite tiresome: first $ORIC, now $ALLO & $IDYA. Why are you sitting on market-sensitive data rather than releasing it now? https://t.co/N8q95re7ho

By Jacob Plieth
IPHYF Falls Short of Promise, Future Uncertain
SocialMar 26, 2026

IPHYF Falls Short of Promise, Future Uncertain

Of all the IO companies I've met and covered in the past ~15 years I'm struggling to think of one that's been more disappointing vs its initial promise than $IPHYF. Will it even last beyond Q3? Via @ByMadeleineA -> https://t.co/DepdZfDBdY

By Jacob Plieth
Prescribing CORT Lifyorli Differs From Cushing’s Experience
SocialMar 26, 2026

Prescribing CORT Lifyorli Differs From Cushing’s Experience

Here's prescribing info for $CORT Lifyorli -> https://t.co/i46Whl5lX6 Why so different from the experience in Cushing's? https://t.co/EqvbCApqHn

By Jacob Plieth
MRK Likely to Rerun TERN Study for Data
SocialMar 25, 2026

MRK Likely to Rerun TERN Study for Data

Based on previous form $MRK will probably now rerun the $TERN study, just to prove to itself that the data were real.

By Jacob Plieth
TERN's Termination Terms Hint MRK Could Be Outbid
SocialMar 25, 2026

TERN's Termination Terms Hint MRK Could Be Outbid

For those wondering if $MRK might be outbid, here are the deal termination terms from $TERN https://t.co/TbM3rWyEoG

By Jacob Plieth
US Patients Access Zegfrovy via Apex Oncology
SocialMar 23, 2026

US Patients Access Zegfrovy via Apex Oncology

Another win for Dizal, but how do US patients get hold of Zegfrovy? Via @ApexOnco -> https://t.co/4GVjyHS9vz https://t.co/bjjrnZkNL6

By Jacob Plieth
NVS
SocialMar 20, 2026

NVS

$NVS paying $2bn for Synnovation's SNV4818, after $LLY paid $1.5bn for Scorpion's STX-478. Mechanistically, seems like good news for $RLAY, bad for $OKUR & $COGT

By Jacob Plieth
MRK Unveils PD-1/VEGF Bispecific at AACR26
SocialMar 18, 2026

MRK Unveils PD-1/VEGF Bispecific at AACR26

$MRK's PD-1 x VEGF bispecific reveal, & other key #AACR26 presentations, via @APEXONCO -> https://t.co/ob1eswxCWF $RVMD $AMGN $GILD $BCYC $SDGR

By Jacob Plieth
Correct Lung Target, Yet IMMP’s
SocialMar 13, 2026

Correct Lung Target, Yet IMMP’s

Lung (not head & neck) was the right choice for $IMMP to pursue in phase 3, but it still failed. Stock -89%. Sory via @APEXONCO -> https://t.co/Y1ilGP5Aqq

By Jacob Plieth
Servier's $2.5B DAWN Deal Closes Ojemda Saga
SocialMar 6, 2026

Servier's $2.5B DAWN Deal Closes Ojemda Saga

$DAWN acquisition by Servier for $2.5bn is quite the ending for Ojemda. Who remembers this RAF inhibitor's bizarre & convoluted history? $BIIB $TAK https://t.co/uD5drO9ymr

By Jacob Plieth
HMPL‑A580 Confirmed as Anti‑EGFR ADC, Impacts ALXO
SocialMar 5, 2026

HMPL‑A580 Confirmed as Anti‑EGFR ADC, Impacts ALXO

I speculated last month that HMPL-A580 was an anti-EGFR ADC https://t.co/XFDtZfWWkH and $HCM just confirmed that this is the case. Relevant for $ALXO

By Jacob Plieth
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