Gemcitabine
Gemcitabine (Gemzar, 2',2'-difluorodeoxycytidine) is a cytotoxic antimetabolite, a pyrimidine nucleoside analog of deoxycytidine given intravenously as a component of standard regimens for pancreatic ductal adenocarcinoma, biliary tract cancer and cholangiocarcinoma, urothelial carcinoma, non-small cell lung cancer and breast cancer.
Gemcitabine (Gemzar, 2',2'-difluorodeoxycytidine) is a cytotoxic antimetabolite, a pyrimidine nucleoside analog of deoxycytidine given intravenously as a component of standard regimens for pancreatic ductal adenocarcinoma, biliary tract cancer and cholangiocarcinoma, urothelial carcinoma, non-small cell lung cancer and breast cancer. It is a prodrug in effect: nucleoside transporters, principally hENT1, carry it into the cell, deoxycytidine kinase performs the rate-limiting first phosphorylation, and the resulting di- and triphosphates act through two complementary routes. The triphosphate competes with deoxycytidine triphosphate for incorporation into replicating DNA, where one further nucleotide is added before synthesis halts — a masked chain termination that repair exonucleases cannot easily excise — while the diphosphate inhibits ribonucleotide reductase and depletes deoxynucleotide pools. The second action reinforces the first, since falling dCTP both removes gemcitabine's competitor at the polymerase and relieves feedback inhibition on the kinase that activates it. Cytidine deaminase inactivates the drug, so the balance between activating kinase and deaminating enzyme, along with hENT1 abundance, largely sets how much active metabolite a tumor accumulates.
Its principal dose-limiting toxicity is myelosuppression; gastrointestinal effects are common but not generally dose-limiting, and because regimens such as gemcitabine plus cisplatin carry substantial emetic risk, antiemetic prophylaxis is routine. In practice gemcitabine is used more often as a backbone partner than alone — with cisplatin in biliary tract and urothelial cancer, with nab-paclitaxel in pancreatic cancer, and with checkpoint inhibitors such as durvalumab and pembrolizumab, reflecting the capacity of gemcitabine-induced immunogenic cell death to release damage-associated molecular patterns including HMGB1 and prime antitumor immunity within the tumor microenvironment.
It also serves as the comparator against which newer regimens are measured — enfortumab vedotin plus pembrolizumab in metastatic urothelial carcinoma, for instance — and as the reference cytotoxic in studies of alternatives such as FOLFIRINOX, which combines fluorouracil, oxaliplatin and irinotecan. Benefit is limited by intrinsic and acquired resistance, and current work addresses this through predictive biomarkers of response, dissection of resistance-associated signaling such as Phosphatidylinositol 3-kinase (PI3K)/Protein kinase B (PKB) and CD44/JAK2/STAT3 and DNA damage repair capacity, and nanomedicine delivery intended to concentrate drug at the tumor — a particular concern in pancreatic cancer, where dense stroma limits how much reaches the cells at all.
Where the papers sit
32 papers from the last 6 months study gemcitabine directly · updated from PubMed 10 Oct 2026
Study type 4 clinical trials · 8 observational · 2 human data · 17 preclinical · 1 unclassified
Themes 5 themes · 1 paradigm shift
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Cancer Immunity and Drug Resistance
Immune activation, treatment resistance and targeted delivery recur across breast cancer, lymphoma and central nervous system studies. Checkpoint blockade, CD40 agonism and chemotherapy are being combined to expand effector CD8+ T-cell responses or improve tumor inflammation. Breast cancer work links chromatin and DNA-repair programs to resistance and tests immune-responsive nanomedicine. Intraventricular gemcitabine addresses the blood-brain barrier, while glofitamab combinations extend therapy in relapsed DLBCL; no single clinical direction unifies the set.
10 papers · 31.2%
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Pancreatic Cancer Treatment
Pancreatic ductal adenocarcinoma treatment is moving toward biomarker-guided combinations that address metabolism, stroma and drug delivery. Gemcitabine is paired with S-1 or nab-paclitaxel, while co-targeting oxidative phosphorylation and pyrimidine synthesis seeks to restore response. Nanoparticles, organoid xenografts and stromal-remodeling studies are refining combination design and tumor-microenvironment analysis. Artificial-intelligence biomarkers and nutritional risk measures aim to select patients most likely to benefit and sustain therapy.
9 papers · 28.1%
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gemcitabine Combination Therapy
Gemcitabine-based treatment is being examined across biliary, urothelial and rare renal cancers, alongside a mechanistic study of gallbladder resistance. In gallbladder cancer, SUMOylated Reptin activates mitophagy, lowers ROS and supports cisplatin-gemcitabine resistance. Clinical work tests gemcitabine with nab-paclitaxel, cisplatin or doxorubicin, while enfortumab vedotin plus pembrolizumab provides a comparator in urothelial carcinoma. Response prediction and antiemetic support remain practical aims rather than a unified therapeutic direction.
6 papers · 18.8%
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Cholangiocarcinoma Signaling and Resistance
Intrahepatic cholangiocarcinoma research is shifting toward combination therapy and molecular explanations of gemcitabine response. Andrographolide plus gemcitabine targets RRM2 and JAK signaling, while fibroblast-associated TPM2 links matrix remodeling, EMT and Notch signaling to resistance. DOT1L expression is being evaluated as a biomarker for gemcitabine benefit. Trans-arterial versus intravenous delivery adds a pharmacokinetic question, but the central focus remains tumor signaling and treatment sensitivity.
4 papers · 12.5%
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gemcitabine Resistance and Tumor Immunity
gemcitabine resistance is being addressed through metabolic inhibition, immune modulation and drug-delivery design across several cancer types. Glycolytic inhibition and redox-responsive gemcitabine-quinine assemblies aim to overcome multidrug resistance. In colorectal cancer, gemcitabine-induced lactylation may increase sensitivity to anti-PD-L1 therapy. The shared direction is toward combination treatment, although the mechanisms and disease settings remain heterogeneous.
3 papers · 9.4%
Gemcitabine can function as an active immune-priming agent rather than merely as cytotoxic or lymphodepleting chemotherapy
In melanoma tumor-bearing mouse models, the study of immune checkpoint blockade with lymphodepleting treatments found that gemcitabine, like cyclophosphamide and radiotherapy, augmented checkpoint-blockade efficacy by expanding tumor-reactive CD8+ T-cell clones; in colorectal cancer cell and mouse models, gemcitabine likewise enhanced anti-PD-L1 therapy, increased CD8+ T-cell infiltration and effector cytokine production, and promoted lactylation-linked immune activation 42329854Jun 42322856Jun. These findings challenge the set’s predominant assumption that gemcitabine is principally a direct tumor-killing drug whose benefit depends on overcoming cancer-cell resistance. They instead establish immune reprogramming and cooperation with checkpoint blockade as an independent therapeutic role, broadening what gemcitabine treatment is expected to accomplish.
Papers
The 32 papers from the last 6 months that study gemcitabine directly, newest first, by theme and by study type. Study types come from PubMed publication types and MeSH headings.
By theme
Cancer Immunity and Drug Resistance (10)
- Protracted Intraventricular Infusion of Gemcitabine to Circumvent the Blood Brain Barrier. Anticancer research · 31 Aug 2026 PMID 42674692
- Postoperative cutaneous metastasis of breast cancer with phenotypic conversion to triple-negative subtype: A case report. Medicine · 15 Aug 2026 PMID 42601691
- Design, Synthesis, and Biological Evaluation of a Cathepsin B-Activated Small Molecule-Drug Conjugate Targeting AKR1C3 to Enhance Chemotherapeutic Selectivity. Journal of medicinal chemistry · 18 Jul 2026 PMID 42470376
- Moonlighting role of meiotic SYCP1 in breast cancer: A chromatin-bound regulator of DNA repair, transcription, and drug resistance. Science advances · 8 Jul 2026 PMID 42418586
- Integrative multi-omics and machine learning reveal PLAUR as a Pan-Cancer prognostic biomarker and potential therapeutic target. Bioorganic chemistry · 2 Jul 2026 PMID 42391812
- Immune Checkpoint Blockade Augments Lymphodepleting Chemotherapy-Induced Antitumor Immunity by Expanding Effector CD8+ T-cell Clones. Cancer research · 22 Jun 2026 PMID 42329854
- Glofitamab plus gemcitabine and oxaliplatin for relapsed/refractory DLBCL: 3-year follow-up of STARGLO. Blood advances · 10 Jun 2026 PMID 42269085
- Spatiotemporally programmed nanomedicine engineering to resolve conflicting immunosignals in triple-negative breast cancer. Signal transduction and targeted therapy · 3 Jun 2026 PMID 42236688
- Novel multiplex immunofluorescence-based tumor inflammation score provides apparent predictive biomarker in a phase I/II study of pembrolizumab with gemcitabine in patients with previously-treated advanced non-small cell lung cancer (NSCLC). Oncoimmunology · 13 May 2026 PMID 42126144
- Docetaxel-Induced Immune Activation Shows Antitumor Synergy With the Tumor-Targeted CD40 Agonist KK2269. Cancer science · 16 Apr 2026 PMID 41989931
Pancreatic Cancer Treatment (9)
- Therapeutic Co-targeting of Oxidative Phosphorylation and Pyrimidine Synthesis Restores Gemcitabine Response in Pancreatic Ductal Adenocarcinoma. Translational research : the journal of laboratory and clinical medicine · 13 Sept 2026 PMID 42732873
- Neoadjuvant Gemcitabine Plus S-1 for Resectable Pancreatic Ductal Adenocarcinoma: A Propensity Score-matched Study. Anticancer research · 31 Aug 2026 PMID 42674690
- Chemotherapy-induced CAF-associated stromal remodeling in a humanized stroma pancreatic ductal adenocarcinoma organoid xenograft model: a comparison between GP and GS. Human cell · 24 Aug 2026 PMID 42635882
- Developing a Histology-Based Artificial Intelligence Biomarker to Predict Adjuvant Chemotherapy Benefit in Pancreatic Cancer. Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 27 Jul 2026 PMID 42507965
- Association Between Geriatric Nutritional Risk Index and Gemcitabine Plus Nab-Paclitaxel Continuation in Elderly Patients With Pancreatic Cancer. Anticancer research · 29 Jun 2026 PMID 42373239
- Breaking Through the Limits: Nanomedicine at the Service of New Drug Combinations to Tackle Pancreatic Cancer. Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 18 Jun 2026 PMID 42312894
- Effects of Chemotherapy on Survival Outcomes in Older Patients with Metastatic Pancreatic Cancer: A Nationwide Population-Based Study. Gut and liver · 10 Jun 2026 PMID 42270328
- Standardized workflow enables reproducibility of drug synergism detection: Results from a multi-center in vitro ring test on complex drug combinations in pancreatic cancer models. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 1 Jun 2026 PMID 42224741
- Amphiphilic Glycopolymer Nanoparticles for pH-Responsive Paclitaxel Delivery and Enhanced Efficacy in Pancreatic Ductal Adenocarcinoma Therapy. ACS applied bio materials · 15 May 2026 PMID 42138136
gemcitabine Combination Therapy (6)
- SUMOylated Reptin maintains low intracellular ROS levels by activating mitophagy to drive gemcitabine resistance in gallbladder cancer. Cell death & disease · 9 Sept 2026 PMID 42716921
- Efficacy and Safety of First-Line Chemotherapy With Gemcitabine Plus Nab-Paclitaxel in Unresectable Gallbladder Cancer. Cancer medicine · 27 Aug 2026 PMID 42649595
- First-Line Enfortumab Vedotin Plus Pembrolizumab vs Gemcitabine Plus Cisplatin for Metastatic Urothelial Carcinoma. JAMA network open · 1 Jul 2026 PMID 42384383
- Antiemetic Efficacy of Aprepitant in Cisplatin-Gemcitabine Therapy for Biliary Tract Cancer: A Multicenter Study. Anticancer research · 27 May 2026 PMID 42203357
- Transcriptome-based Deep Learning Model for Predicting Gemcitabine and Cisplatin Chemotherapy Response in Urothelial Carcinoma: Development and External Validation. Cancer genomics & proteomics · 29 Apr 2026 PMID 42055629
- Phase II Trial of Ixazomib Combined with Gemcitabine and Doxorubicin in Patients with SMARCB1-Deficient Renal Medullary Carcinoma. Clinical cancer research : an official journal of the American Association for Cancer Research · 20 Apr 2026 PMID 42007903
Cholangiocarcinoma Signaling and Resistance (4)
- Fibroblast-associated TPM2 links cell-matrix remodeling to EMT-Notch signaling and gemcitabine resistance in intrahepatic cholangiocarcinoma. Cancer biology & therapy · 21 Sept 2026 PMID 42766730
- Pharmacokinetic and pharmacodynamic sub-study of trans-arterial vs. intravenous gemcitabine in the TIGeR-PaC phase 3 clinical trial. Cancer chemotherapy and pharmacology · 16 Aug 2026 PMID 42604879
- Transcriptomic Profiling Identifies Higher DOT1L Expression as a Candidate Biomarker for a Positive Response to Gemcitabine in Cholangiocarcinoma. Cancer genomics & proteomics · 29 Jun 2026 PMID 42373229
- Synergistic anti-tumor activity of andrographolide and gemcitabine in intrahepatic cholangiocarcinoma through inhibition of RRM2 and the JAK/STAT3 pathway. Cancer chemotherapy and pharmacology · 11 May 2026 PMID 42113266
gemcitabine Resistance and Tumor Immunity (3)
- Gemcitabine enhanced the sensitivity of colorectal cancer to anti-PD-L1 therapy by promoting lactylation. International immunopharmacology · 20 Jun 2026 PMID 42322856
- Self-Assembly Regulation, Drug Release Behavior, Anti-Multidrug Resistance of Redox-Responsive Gemcitabine-Quinine Nanoassemblies in Glioblastoma Therapy. Langmuir : the ACS journal of surfaces and colloids · 30 Apr 2026 PMID 42060886
- Preparation of CPD12C15 hyaluronic acid nanoparticles, a novel glycolytic inhibitor and preliminary pharmacologic study on anti-pancreatic cancer. International journal of pharmaceutics · 29 Apr 2026 PMID 42055152
By study type
Clinical trials (4)
- Pharmacokinetic and pharmacodynamic sub-study of trans-arterial vs. intravenous gemcitabine in the TIGeR-PaC phase 3 clinical trial. Cancer chemotherapy and pharmacology · 16 Aug 2026 PMID 42604879
- Glofitamab plus gemcitabine and oxaliplatin for relapsed/refractory DLBCL: 3-year follow-up of STARGLO. Blood advances · 10 Jun 2026 PMID 42269085
- Novel multiplex immunofluorescence-based tumor inflammation score provides apparent predictive biomarker in a phase I/II study of pembrolizumab with gemcitabine in patients with previously-treated advanced non-small cell lung cancer (NSCLC). Oncoimmunology · 13 May 2026 PMID 42126144
- Phase II Trial of Ixazomib Combined with Gemcitabine and Doxorubicin in Patients with SMARCB1-Deficient Renal Medullary Carcinoma. Clinical cancer research : an official journal of the American Association for Cancer Research · 20 Apr 2026 PMID 42007903
Observational studies and case reports (8)
- Neoadjuvant Gemcitabine Plus S-1 for Resectable Pancreatic Ductal Adenocarcinoma: A Propensity Score-matched Study. Anticancer research · 31 Aug 2026 PMID 42674690
- Efficacy and Safety of First-Line Chemotherapy With Gemcitabine Plus Nab-Paclitaxel in Unresectable Gallbladder Cancer. Cancer medicine · 27 Aug 2026 PMID 42649595
- Postoperative cutaneous metastasis of breast cancer with phenotypic conversion to triple-negative subtype: A case report. Medicine · 15 Aug 2026 PMID 42601691
- Developing a Histology-Based Artificial Intelligence Biomarker to Predict Adjuvant Chemotherapy Benefit in Pancreatic Cancer. Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 27 Jul 2026 PMID 42507965
- First-Line Enfortumab Vedotin Plus Pembrolizumab vs Gemcitabine Plus Cisplatin for Metastatic Urothelial Carcinoma. JAMA network open · 1 Jul 2026 PMID 42384383
- Association Between Geriatric Nutritional Risk Index and Gemcitabine Plus Nab-Paclitaxel Continuation in Elderly Patients With Pancreatic Cancer. Anticancer research · 29 Jun 2026 PMID 42373239
- Effects of Chemotherapy on Survival Outcomes in Older Patients with Metastatic Pancreatic Cancer: A Nationwide Population-Based Study. Gut and liver · 10 Jun 2026 PMID 42270328
- Antiemetic Efficacy of Aprepitant in Cisplatin-Gemcitabine Therapy for Biliary Tract Cancer: A Multicenter Study. Anticancer research · 27 May 2026 PMID 42203357
Human data, design not indexed (2)
- Fibroblast-associated TPM2 links cell-matrix remodeling to EMT-Notch signaling and gemcitabine resistance in intrahepatic cholangiocarcinoma. Cancer biology & therapy · 21 Sept 2026 PMID 42766730
- Transcriptome-based Deep Learning Model for Predicting Gemcitabine and Cisplatin Chemotherapy Response in Urothelial Carcinoma: Development and External Validation. Cancer genomics & proteomics · 29 Apr 2026 PMID 42055629
Preclinical: animal, cell and lab studies (17)
- SUMOylated Reptin maintains low intracellular ROS levels by activating mitophagy to drive gemcitabine resistance in gallbladder cancer. Cell death & disease · 9 Sept 2026 PMID 42716921
- Protracted Intraventricular Infusion of Gemcitabine to Circumvent the Blood Brain Barrier. Anticancer research · 31 Aug 2026 PMID 42674692
- Chemotherapy-induced CAF-associated stromal remodeling in a humanized stroma pancreatic ductal adenocarcinoma organoid xenograft model: a comparison between GP and GS. Human cell · 24 Aug 2026 PMID 42635882
- Design, Synthesis, and Biological Evaluation of a Cathepsin B-Activated Small Molecule-Drug Conjugate Targeting AKR1C3 to Enhance Chemotherapeutic Selectivity. Journal of medicinal chemistry · 18 Jul 2026 PMID 42470376
- Moonlighting role of meiotic SYCP1 in breast cancer: A chromatin-bound regulator of DNA repair, transcription, and drug resistance. Science advances · 8 Jul 2026 PMID 42418586
- Integrative multi-omics and machine learning reveal PLAUR as a Pan-Cancer prognostic biomarker and potential therapeutic target. Bioorganic chemistry · 2 Jul 2026 PMID 42391812
- Transcriptomic Profiling Identifies Higher DOT1L Expression as a Candidate Biomarker for a Positive Response to Gemcitabine in Cholangiocarcinoma. Cancer genomics & proteomics · 29 Jun 2026 PMID 42373229
- Immune Checkpoint Blockade Augments Lymphodepleting Chemotherapy-Induced Antitumor Immunity by Expanding Effector CD8+ T-cell Clones. Cancer research · 22 Jun 2026 PMID 42329854
- Gemcitabine enhanced the sensitivity of colorectal cancer to anti-PD-L1 therapy by promoting lactylation. International immunopharmacology · 20 Jun 2026 PMID 42322856
- Breaking Through the Limits: Nanomedicine at the Service of New Drug Combinations to Tackle Pancreatic Cancer. Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 18 Jun 2026 PMID 42312894
- Spatiotemporally programmed nanomedicine engineering to resolve conflicting immunosignals in triple-negative breast cancer. Signal transduction and targeted therapy · 3 Jun 2026 PMID 42236688
- Standardized workflow enables reproducibility of drug synergism detection: Results from a multi-center in vitro ring test on complex drug combinations in pancreatic cancer models. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 1 Jun 2026 PMID 42224741
- Amphiphilic Glycopolymer Nanoparticles for pH-Responsive Paclitaxel Delivery and Enhanced Efficacy in Pancreatic Ductal Adenocarcinoma Therapy. ACS applied bio materials · 15 May 2026 PMID 42138136
- Synergistic anti-tumor activity of andrographolide and gemcitabine in intrahepatic cholangiocarcinoma through inhibition of RRM2 and the JAK/STAT3 pathway. Cancer chemotherapy and pharmacology · 11 May 2026 PMID 42113266
- Self-Assembly Regulation, Drug Release Behavior, Anti-Multidrug Resistance of Redox-Responsive Gemcitabine-Quinine Nanoassemblies in Glioblastoma Therapy. Langmuir : the ACS journal of surfaces and colloids · 30 Apr 2026 PMID 42060886
- Preparation of CPD12C15 hyaluronic acid nanoparticles, a novel glycolytic inhibitor and preliminary pharmacologic study on anti-pancreatic cancer. International journal of pharmaceutics · 29 Apr 2026 PMID 42055152
- Docetaxel-Induced Immune Activation Shows Antitumor Synergy With the Tumor-Targeted CD40 Agonist KK2269. Cancer science · 16 Apr 2026 PMID 41989931
Unclassified: not yet indexed with MeSH (1)
- Therapeutic Co-targeting of Oxidative Phosphorylation and Pyrimidine Synthesis Restores Gemcitabine Response in Pancreatic Ductal Adenocarcinoma. Translational research : the journal of laboratory and clinical medicine · 13 Sept 2026 PMID 42732873
Written from 32 PubMed abstracts, each one listed by PMID above. Published: 2026-06-16. Last written: 2026-09-23 by GPT. Corrections: 2026-08-08 by GPT. Reviewed by a human editor on 2026-07-23. Drafted by language models from published abstracts; not medical advice.