Disease Briefing

Esophageal cancer: research and therapeutic landscape

A live synthesis of what is being targeted, what is being trialled, which datasets exist, and where the actionable gaps sit — assembled from public APIs, with every figure traceable to its source.

Generated 2026-09-30Sources Open Targets · ClinicalTrials.gov · openFDA · GEO · PubMed · Europe PMC · iCite · RePORTERRanked 428 studies · 21,085 GEO samples
Page Reading as
Reorders emphasis only — nothing is hidden or loaded on demand.

Answer block

12 genes recurrently implicated in esophageal cancer — TP53, ERBB2, CD274, PDCD1, CDKN2A, NFE2L2, SOX2, EGFR, CCND1, KRAS, SMAD4, CLDN18 — triaged for what can actually be aimed at them, alongside the trials, public datasets, literature and funding around the disease. Every figure below carries its source and retrieval date in the section it comes from.

11
drugs carry an FDA label naming esophageal cancer: Durvalumab, Fam-Trastuzumab Deruxtecan-Nxki, Ipilimumab, Nivolumab, Pembrolizumab, Porfimer and 5 more. This counts labels, not treatment — the disease is also treated with agents approved under broader indications
2
of the 12 genes above carry a drug that is approved in esophageal cancer itself — CLDN18, ERBB2. Across all of them 186 drug entries reach these genes, 170 distinct once salt forms are merged
4
registered PD-1 cell-therapy trials in esophageal cancer, 1 active. Counted from ClinicalTrials.gov across 5 synonyms, deduplicated by NCT id, interventional studies only — the query is published in the JSON beside this page so the number can be re-derived
4
targets carry an Open Targets tractability signal and no trial in esophageal cancer that the searches found (no trial naming a drug Open Targets lists for the gene, none naming it as a cell-therapy target): NFE2L2, SOX2, KRAS, SMAD4. PDCD1, CLDN18 have cell-therapy trials, so they are undrugged rather than untouched
729
human GEO series match the disease; 428 survive on-topic filtering, and only 23 are patient cohorts of 100+ samples
284
Europe PMC full-text papers name GSE53625 — the highest accession-mention count in the set. A mention is not proof of reanalysis, so read it as reach rather than reuse
$42.9M
NIH obligations in FY2025, up 81% since 2013 — while distinct core projects went 50 to 49. Larger awards rather than more distinct core projects; core projects are not the same unit as laboratories

Target landscape

Open Targets · retrieved 2026-09-30 · weekly

12 genes recurrently implicated in esophageal cancer, triaged for whether anything can actually be aimed at them. The zeros are the informative rows.

Of 12 recurrently implicated genes, 9 carry any drug at all. That is a statement about these 12 gene targets, not about the disease: Esophageal cancer does have labelled therapy — 11 drugs, listed in the next section.

Two different questions

The table below asks what can be aimed at 12 recurrently implicated genes. That is narrower than what is approved for the disease, and narrower again than what esophageal cancer is actually treated with, which includes agents approved under broader indications. All three are on this page and they are kept apart deliberately.

GeneDrugsApproval, and whether it reached this diseaseOpen Targets tractabilitycomputed from protein features and literature — a signal that a modality is worth trying, not evidence that it worksCell therapy here
TP53 across cancers → 8 Phase 3Alrizomadlin, Cenersen, Contusugene Ladenovec, Eprenetapopt, Idasanutlin, Navtemadlin, Siremadlin, Teprasiran2 trials, none active other clinical modality, protein degrader, small molecule —
ERBB2 across cancers → 43 10 approvedAfatinib, Dacomitinib, Lapatinib, Margetuximab, Masoprocol, Neratinib, Trastuzumab Duocarmazine, Tucatinib, Zanidatamab, ZenocutuzumabApproved in esophageal cancer: Zanidatamab.37 active of 78 esophageal cancer trials antibody, other clinical modality, protein degrader, small molecule —
CD274 across cancers → 13 3 approvedAvelumab, Cosibelimab, SugemalimabApproved in Merkel cell skin cancer, urothelial carcinoma, neuroendocrine neoplasm and 2 other indications. No esophageal cancer indication appears on these drugs’ labels.49 active of 91 esophageal cancer trials antibody, other clinical modality, protein degrader, small molecule —
PDCD1 across cancers → 26 5 approvedCemiplimab, Retifanlimab, Serplulimab, Sintilimab, ToripalimabApproved in basal cell carcinoma, cutaneous squamous cell carcinoma, cervical cancer and 9 other indications. No esophageal cancer indication appears on these drugs’ labels.213 active of 406 esophageal cancer trials antibody, other clinical modality, protein degrader, small molecule 1 active of 4 trials
CDKN2A across cancers → 0 No drug— — —
NFE2L2 across cancers → 2 1 approvedOmaveloxoloneNo esophageal cancer trial of any of these drugs antibody, protein degrader, small molecule —
SOX2 across cancers → 0 No drug— protein degrader, small molecule —
EGFR across cancers → 72 15 approvedAfatinib, Aumolertinib, Brigatinib, Cetuximab Sarotalocan, Dacomitinib, Erlotinib, Icotinib, Lapatinib, Lazertinib, Mobocertinib, Neratinib, Nimotuzumab, Olmutinib, Osimertinib, RociletinibApproved in non-small cell lung carcinoma, anaplastic large cell lymphoma, head and neck cancer and 3 other indications. No esophageal cancer indication appears on these drugs’ labels.19 active of 122 esophageal cancer trials antibody, other clinical modality, protein degrader, small molecule —
CCND1 across cancers → 2 Phase 1Briciclib, Palbociclib3 active of 3 esophageal cancer trials protein degrader, small molecule —
KRAS across cancers → 3 2 approvedAdagrasib, SotorasibApproved in non-small cell lung carcinoma. No esophageal cancer indication appears on these drugs’ labels.No esophageal cancer trial of any of these drugs antibody, protein degrader, small molecule —
SMAD4 across cancers → 0 No drug— protein degrader, small molecule —
CLDN18 across cancers → 1 1 approvedZolbetuximabApproved in esophageal cancer: Zolbetuximab.3 active of 3 esophageal cancer trials antibody 1 active of 1 trial

Dataset evidence counts studies in the 428-study ranked set whose title or abstract names the gene; the bar is scaled to EGFR. Sources: Open Targets Platform and NCBI GEO, retrieved 2026-09-30. Clinical stage is the highest reached for any indication — see the per-drug indications noted in each row. Target-prioritisation reference only; not clinical or prescribing guidance.

What is actually approved here

openFDA drug labels · weekly

11 drugs carry an FDA label naming esophageal cancer: Durvalumab, Fam-Trastuzumab Deruxtecan-Nxki, Ipilimumab, Nivolumab, Pembrolizumab, Porfimer, Tislelizumab, Trastuzumab, Trifluridine And Tipiracil, Zanidatamab, Zolbetuximab. Separately, 31 of the drugs returned for the genes in the table above are approved only for other diseases and reach esophageal cancer through trials, not through their labels.

11Labelled for esophageal cancerFDA INDICATIONS AND USAGE names the disease
31Approved, but for another diseasereturned for the genes in the table above
2Backbone agents listing itbroad cytotoxics whose labels name many tumours
1Active cell-therapy trials naming PD-1of 4 registered

Every label that names esophageal cancer

DrugRoleWhat the label says
DurvalumabIMFINZILabelled herein combination with fluorouracil, leucovorin, oxaliplatin, and docetaxel (FLOT) chemotherapy as neoadjuvant and adjuvant treatment, followed by single agent IMFINZI, for the treatment of adult patients with resectable gastric or gastroesophageal junction adenocarcinoma (GC/GEJC).
Fam-Trastuzumab Deruxtecan-NxkiEnhertuLabelled hereHER2-Positive Locally Advanced or Metastatic Gastric Cancer as monotherapy for the treatment of adult patients with locally advanced or metastatic HER2-positive (IHC 3+ or IHC 2+/ISH positive) gastric or gastroesophageal junction adenocarcinoma who have received a prior trastuzumab-based regimen.
IpilimumabYERVOYLabelled hereEsophageal Cancer • Treatment of adult patients with unresectable advanced or metastatic esophageal squamous cell carcinoma, as first line treatment in combination with nivolumab whose tumors express PD-L1 (≥1).
NivolumabOPDIVO, OPDIVO QVANTIGLabelled hereEsophageal Cancer • adult patients with completely resected esophageal or gastroesophageal junction cancer with residual pathologic disease, who have received neoadjuvant chemoradiotherapy (CRT).
PembrolizumabKEYTRUDA, KEYTRUDA QLEXLabelled hereEsophageal Cancer KEYTRUDA QLEX is indicated for the treatment of adult patients with locally advanced or metastatic esophageal or gastroesophageal junction (GEJ) (tumors with epicenter 1 to 5 centimeters above the GEJ) carcinoma that is not amenable to surgical resection or definitive chemoradiation either: in combination with platinum- and fluoropyrimidine-based chemotherapy for patients with...
PorfimerPhotofrinLabelled hereEsophageal Cancer PHOTOFRIN ® is indicated for the palliation of patients with completely obstructing esophageal cancer, or of patients with partially obstructing esophageal cancer who, in the opinion of their healthcare provider, cannot be satisfactorily treated with Nd:YAG laser therapy.
TislelizumabTEVIMBRALabelled hereEsophageal Cancer First-Line Treatment of Esophageal Squamous Cell Carcinoma TEVIMBRA, in combination with platinum-containing chemotherapy, is indicated for the first-line treatment of adults with unresectable or metastatic esophageal squamous cell carcinoma (ESCC) whose tumors express PD-L1 (≥1).
TrastuzumabHERZUMA, Herceptin, KanjintiLabelled here( 1.1 , 1.2 ) The treatment of HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma.
Trifluridine And TipiracilLONSURFLabelled heremetastatic gastric or gastroesophageal junction adenocarcinoma previously treated with at least two prior lines of chemotherapy that included a fluoropyrimidine, a platinum, either a taxane or irinotecan, and if appropriate, HER2/neu-targeted therapy.
ZanidatamabZIIHERALabelled hereGastroesophageal Adenocarcinoma (GEA) • ZIIHERA, in combination with fluoropyrimidine- and platinum-containing chemotherapy and tislelizumab-jsgr, is indicated for the first-line treatment of adult patients with HER2-positive (IHC 3+ or IHC 2+/ISH+) unresectable locally advanced or metastatic gastric, gastroesophageal junction, or esophageal adenocarcinoma, as detected by an FDA-authorized test...
ZolbetuximabVYLOYLabelled hereVYLOY, in combination with fluoropyrimidine- and platinum-containing chemotherapy, is indicated for the first-line treatment of adults with locally advanced unresectable or metastatic human epidermal growth factor receptor 2 (HER2)‑negative gastric or gastroesophageal junction (GEJ) adenocarcinoma whose tumors are claudin (CLDN) 18.2 positive as determined by an FDA-approved test [see Dosage an...
CapecitabineCAPECITABINE, Capecitabine, XELODABackboneGastric, Esophageal, or Gastroesophageal Junction Cancer treatment of adults with unresectable or metastatic gastric, esophageal, or gastroesophageal junction cancer as a component of a combination chemotherapy regimen.
DocetaxelBEIZRAY, DOCETAXEL, DOCIVYXBackboneGastric Adenocarcinoma (GC): with cisplatin and fluorouracil for untreated, advanced GC, including the gastroesophageal junction

68 labels carry a positive indication naming the disease under indications_and_usage:"esophageal cancer" OR indications_and_usage:"esophageal carcinoma" OR indications_and_usage:"esophageal squamous" OR indications_and_usage:"esophageal adenocarcinoma" OR indications_and_usage:"gastroesophageal junction"; they collapse to 13 distinct molecules once salt forms, biosimilars and co-formulated hyaluronidase are merged. Source: openFDA drug label API (api.fda.gov/drug/label.json), retrieved 2026-09-18. Labels change; this reflects the current label text, not the approval history. Not prescribing guidance.

Cell therapy against PD-1

ClinicalTrials.gov · retrieved 2026-09-18 · weekly

PD-1 is the busiest cell-therapy target among those this briefing searched in esophageal cancer: 4 registered trials naming it, 1 still active. It has no gene entry of its own and is reached through PDCD1: the checkpoint receptor PDCD1 encodes, on the T cell.

TrialPhaseStatusTitleLast update
NCT074106761/2RecruitingEBNK-001 Allogeneic NK Cells With Low-Dose IL-15 ± Pembrolizumab in Advanced Solid Tumors2026-02-18
NCT037063261/2UnknownCAR T and PD-1 Knockout Engineered T Cells for Esophageal Cancer2018-10-16
NCT027573911TerminatedCD8+ T Cell Therapy and Pembrolizumab in Treating Patients With Metastatic Gastrointestinal Tumors2020-10-30
NCT037097061/2TerminatedPilot Immunotherapy Study With Letetresgene Autoleucel (Lete-cel, GSK3377794)T-cells in New York Esophageal Squamous Cell Carcinoma-1 (NY-ESO-1)/ LAGE-1a-positive Advanced Non-small Cell Lung Cancer (NSCLC) Either Alone or in Combination With Pembrolizumab2024-02-23

4 of 4 shown, most recently active first. Other targets searched: CLDN18.2 (1). Source: ClinicalTrials.gov API v2, retrieved 2026-09-18. A trial counts here when its registered conditions name esophageal cancer or a tumour-agnostic basket, its title names an administered cell product, and the title names this target: a HER2 CAR-T trial that adds a PD-1 antibody is a HER2 trial. A trial stating only a product code is missed.

Research momentum

PubMed MeSH · monthly

Every term below is a share of the esophageal cancer literature, not a count, because the field itself grew: 2015–2018 (n=6,000) against 2021–2025 (n=6,000). A topic whose papers doubled while the field doubled has not risen.

These are sample shares. The two windows hold 7,838 and 11,973 papers; MeSH terms were read from an evenly spaced sample of 6,000 and 6,000 of them, taken across the whole window rather than from its most recent papers. Percentages carry sampling error of roughly a percentage point and small differences between two terms are not meaningful.

Rising, with a real baseline

MeSH term2015–182021–25ChangeShare now
Machine Learning0.08%1.03%12.4×62 papers
Immunotherapy0.5%4.47%8.93×268 papers
RNA, Circular0.13%0.9%6.75×54 papers
Robotics0.08%0.53%6.4×32 papers
Tumor Microenvironment0.73%4.68%6.39×281 papers
Progression-Free Survival0.22%1.37%6.31×82 papers
Circulating Tumor DNA0.08%0.47%5.6×28 papers
Nomograms0.3%1.67%5.56×100 papers
B7-H1 Antigen0.45%2.17%4.81×130 papers
Molecular Docking Simulation0.1%0.47%4.67×28 papers

Cooling

MeSH term2015–182021–25ChangeShare now
Multivariate Analysis3.48%0.23%0.07×14 papers
Survival Analysis5.85%0.72%0.12×43 papers
Immunohistochemistry4.85%0.73%0.15×44 papers
Tumor Cells, Cultured1.48%0.23%0.16×14 papers
Taxoids1.75%0.28%0.16×17 papers
RNA, Small Interfering1.47%0.23%0.16×14 papers

Biggest topics now

MeSH term2015–182021–25ChangeShare now
Esophageal Squamous Cell Carcinoma24.93%37.73%1.51×2264 papers
Esophagectomy24.93%23.9%0.96×1434 papers
Prognosis20.8%18.85%0.91×1131 papers
Adenocarcinoma24.75%14.97%0.6×898 papers
Treatment Outcome17.83%14.43%0.81×866 papers
Neoadjuvant Therapy9.47%11.77%1.24×706 papers
Stomach Neoplasms10.05%11.27%1.12×676 papers
Gene Expression Regulation, Neoplastic11.17%10.88%0.97×653 papers
Cell Proliferation8.93%10.1%1.13×606 papers
Carcinoma, Squamous Cell36.25%9.92%0.27×595 papers

Publication mix

Type2015–182021–25
Clinical Trial0.0%0.1%
Randomized Controlled Trial3.0%2.3%
Review9.2%6.6%
Meta-Analysis3.5%2.8%
Case Reports0.0%1.6%

Query: Esophageal Neoplasms[MeSH Major Topic] NOT ("Esophageal Achalasia"[MeSH] OR "Eosinophilic Esophagitis"[MeSH]). Terms need at least 12 papers in the recent window and, in the rising table, at least 5 in the earlier one — a term going from 1 paper to 12 is a large fold change and no evidence of anything. Ubiquitous descriptors (Humans, Animals, age bands) and the disease’s own term are dropped. Windows are read whole where they fit and sampled where they do not; the totals and the sample sizes are both in the JSON beside this page. Source: PubMed MeSH, retrieved 2026-09-12.

Disease burden

What the public sources count, and how closely each category matches this disease. The same figures for every disease on the site are on one table.

MeasureValueMatchWhat it counts
New cases each year22,530 cases/yeardirect2026
Deaths each year16,290 deaths/yeardirect2026
Incidence rate4.2 cases per 100,000 people per yeardirect2019-2023
Death rate3.7 deaths per 100,000 people per yeardirect2020-2024
People living with it55,281 people living with the diseasedirect2023
Median age at diagnosis69.0 yearsdirect2019-2023
median age at death71 yearsdirect2020-2024
Five-year relative survival22.2%direct2016-2022

Years of life lost (proxy)

7.3 years per case, 164,766 a year, from survival and age at diagnosis rather than from a death count. derived proxy Not the WHO/GBD measure, which uses age at death and a life table; comparable across these briefings, not with published YLL figures. What this costs to fund is in Funding.

3 assumptions behind this estimate
  • Five-year relative survival stands in for cure; a death after five years is not counted.
  • The median age at diagnosis stands in for the whole age distribution.
  • Life expectancy at birth (78.4 years) is the reference, rather than remaining expectancy at the age of death from a life table.
  • Each assumption moves the result by more than the difference between the two diseases currently on this site, so this figure separates a disease from one ten times its size, not from a close neighbour.

Funding

NIH RePORTER · quarterly

NIH obligations naming esophageal cancer, after removing the 1,667 records across all years that matched the search but are about something else. That filter is not cosmetic: without it this section reports another field’s funding as this disease’s.

$42.9MNIH obligations, FY2025from $23.7M in FY2013 · +81%
49distinct projects funded50 in FY2013
$44.1Mpeak year was FY2023obligations, all institutes
80%of FY2025 awards from NCI52 of 65

NIH obligations by fiscal year

$11M$22M$33M$44M13151719212325
YearObligationsAwardsDistinct projectsDropped as off-topic
FY2013$23.7M6250141
FY2014$34.9M6849128
FY2015$40.3M8565105
FY2016$31.1M8066103
FY2017$39.8M8664121
FY2018$38.0M8861175
FY2019$36.3M7354137
FY2020$33.3M6951120
FY2021$32.5M6950121
FY2022$37.7M7356132
FY2023$44.1M7152139
FY2024$42.6M6954118
FY2025$42.9M6549127

Where FY2025 money went

InstitutionObligationsAwards
Case Western Reserve University$6.5M7
University Of Tx Md Anderson Can Ctr$4.8M6
Arizona State University-Tempe Campus$3.6M2
Fred Hutchinson Cancer Center$3.4M5
Columbia University Health Sciences$3.2M4
University Of Miami School Of Medicine$2.9M6
Division Of Cancer Epidemiology And Genetics$2.8M5
University Of Colorado Denver$1.7M0
Johns Hopkins University$1.4M3
Massachusetts General Hospital$1.2M2

Text search esophageal cancer over project title, terms and abstract, per fiscal year. Awards are individual funding actions; distinct projects collapse them by core project number, so a multi-year grant counts once. The most recent year may be incomplete. Source: NIH RePORTER, retrieved 2026-09-19.

What that buys

Against 164,766 years of life lost a year, FY2025 obligations are $260 per life-year — $1,904 per case. The estimate and its assumptions are in Disease burden.

Who funds it, FY2025

The total says how much. These say who from, through what kind of award, and to whom — which a dollar figure cannot.

NIH institutes

NCI52 · 80%
NIDDK10 · 15%
NIGMS1 · 2%
NIBIB1 · 2%
NIAID1 · 2%

Projects by administering institute. The rows above are the top 5 and account for 65 of 65.

Award mechanisms

R0125 · 38%
P019 · 14%
ZIA6 · 9%
U014 · 6%
U543 · 5%
U2C3 · 5%

R01 is an investigator-initiated grant; ZIA is NIH intramural, meaning the work happens inside NIH rather than being funded outside it. The rows above are the top 15 and account for 62 of 65.

Where it lands

Case Western Reserve University$6.5M · 15.2%
University Of Tx Md Anderson Can Ctr$4.8M · 11.3%
Arizona State University-Tempe Campus$3.6M · 8.3%
Fred Hutchinson Cancer Center$3.4M · 8.0%
Columbia University Health Sciences$3.2M · 7.6%
University Of Miami School Of Medicine$2.9M · 6.8%

Share of $42.9M in FY2025. The top three hold 35%.

Public datasets, ranked

NCBI GEO + Europe PMC + iCite · weekly

729 human GEO series match esophageal cancer. Keyword relevance cannot tell a 360-sample patient cohort from a six-well cell-line experiment, so this ranking scores four things GEO does not expose: how often the accession is named in full-text papers, field-normalised citation impact, clinical annotation, and cohort type.

Composition of the 428-study ranked set

unspecified 148patient 143cell line 96mixed 36xenograft 5
148 unspecified143 patient96 cell line36 mixed5 xenograft151 carry clinical annotation114 carry survival23 patient cohorts ≥100 GEO samples21,085 GEO samples totalin 20 single-cell series the GEO sample count is the submitter’s unit (cells, libraries or pools), not patients

Established

high reuse, older
AccessionStudySamplesMentionsEurope PMCRCREvidence
GSE53625LncRNA profile study reveals a three-lncRNA signature associated with the survival of esophageal squamous cell carcinoma patients2014 · array3582849.8
patient cohortAPT 0.95survival367 cites
GSE160269Dissecting esophageal squamous-cell carcinoma ecosystem by single-cell transcriptomic analysis2020 · single-cell12813714.2
patient cohortAPT 0.75survival302 cites
GSE165252RNA sequencing of the phase II PERFECT trial combining a PD-L1 inhibitor (atezolizumab) with neoadjuvant chemoradiotherapy in resectable esophageal adenocarcinoma patients.2021 · sequencing776611.0
patient cohortAPT 0.95molecularATEZOLIZUMABPD-L1230 cites
GSE23400Global gene expression profiling and validation in esophageal squamous cell carcinoma (ESCC)2010 · array2082264.3
APT 0.75survival182 cites
GSE20347Analysis of gene expression in esophageal squamous cell carcinoma (ESCC)2011 · array342313.4
patient cohortAPT 0.75stage154 cites
GSE145370Immune suppressive landscape in a human esophageal squamous cell carcinoma microenvironment2020 · single-cell284615.0
APT 0.75survivalmolecularCD274397 cites
GSE42363Exome and whole genome sequencing of esophageal adenocarcinoma identifies recurrent driver events and mutational complexity2013 · array141216.0
patient cohortAPT 0.95survivalmolecularCDKN2ASMAD4TP53625 cites
GSE13898Robust prognostic biomarkers for EAC identified by systems-level characterization of tumor transcriptome2011 · array118652.7
patient cohortAPT 0.75survival124 cites

Recent

2022 onward, by score
AccessionStudySamplesMentionsEurope PMCRCREvidence
GSE203115Intra-tumoural Microbiota Remodels the Tumour Immune2023 · single-cell121310.6
patient cohortAPT 0.75survivalmolecularPD-1131 cites
GSE174302Cancer specific microbiome revealed by cell-free RNA reads in patients' plasma2022 · sequencing230164.6
patient cohortAPT 0.7552 cites
GSE203067Single-Cell Transcriptomic Analysis of Primary and Metastatic Tumor Ecosystems in Esophageal Squamous Cell Carcinoma2025 · single-cell2156.3
patient cohortAPT 0.7587 cites
GSE221561Comprehensive Landscape of Resistance Mechanisms for Neoadjuvant Therapy in Esophageal Squamous Cell Carcinoma by single-cell Transcriptomics2023 · single-cell11131.7
patient cohortAPT 0.5survival24 cites
GSE222078The single cell transcriptional landscape of esophageal adenocarcinoma and its modulation by neoadjuvant chemotherapy2023 · sequencing1083.1
patient cohortAPT 0.7550 cites
GSE232332Epigenetic array data of saliva samples in individiduals with esophageal cancer with controls2024 · methylation27522.2
patient cohortAPT 0.5stage26 cites

Sources: NCBI GEO + Europe PMC + iCite, retrieved 2026-09-19. SubSeries are collapsed to one row per study by linked PMID. Of 729 series retrieved, 11 were dropped by the profile’s exclusion rules and 203 named the disease only in passing. The ranked set is a relevance-ranked sample, not a census, so the composition figures describe the sample only.

Where the gaps are

Derived from the sections above · recomputed on every refresh

Each card below is a disagreement between two of the tables on this page — a drug that exists but was never tried here, a target that looks tested and was not, a gene with no drug whose product has a busy clinical programme. They are computed from the same facts as the tables, so they cannot contradict them.

CDKN2A

Open Targets lists no drug against it and no trial in esophageal cancer names it. A bounded negative: the sources and search terms are in the JSON beside this page.

NFE2L2

1 approved drug (Omaveloxolone) and no registered trial in esophageal cancer naming any of them on ClinicalTrials.gov. The molecules exist; the search finds no test of them here.

SOX2

Open Targets lists no drug against it and no trial in esophageal cancer names it. A bounded negative: the sources and search terms are in the JSON beside this page.

KRAS

2 approved drugs (Adagrasib, Sotorasib) and no registered trial in esophageal cancer naming any of them on ClinicalTrials.gov. The molecules exist; the search finds no test of them here.

SMAD4

Open Targets lists no drug against it and no trial in esophageal cancer names it. A bounded negative: the sources and search terms are in the JSON beside this page.

How a machine reads this page

Static

This page is written to be quoted correctly by a model as much as read by a person. The same facts are available as JSON at the sibling URL below, which is what to cite. The cross-disease layer — burden, genes, drugs and antigens across every briefing — is described at /disease/api.json.

Fully server-rendered

Every figure is in the HTML at first byte. No JavaScript runs, no figure is fetched after load, and nothing on this page requires a renderer to see.

Every number carries a source

Each section names the API it came from and the date it was retrieved: Open Targets (2026-09-30), ClinicalTrials.gov (2026-09-18), openFDA (2026-09-18), NCBI GEO (2026-09-19), PubMed (2026-09-12), NIH RePORTER (2026-09-19).

Negatives stated explicitly

Where the searches find nothing for esophageal cancer — no drug, no trial, no approval — the page says so in those words rather than omitting the row, and names the source searched. An absent row is unquotable; a bounded negative is the finding.

Denominators, not just percentages

Every share is printed with the count and the total it came from, so a figure can be checked rather than taken.

The filters are published

3 exclusion patterns are applied to free text before anything is ranked, because none of consequence is used as a model system in none: the oesophageal lines are used for the disease. What was removed and why is stated in each section rather than silently applied.

{
  "disease": "Esophageal cancer",
  "mesh": "Esophageal Neoplasms",
  "facts": "https://usebiotransfer.org/disease/esophageal-cancer.json",
  "methods": "https://usebiotransfer.org/methods/",
  "all_diseases": "https://usebiotransfer.org/disease/api.json",
  "note": "Every figure on the page is in that JSON with its source and retrieval date. Quote from it rather than from the HTML."
}