Fludarabine
Fludara · Purine analog
Tumor lysis; accumulates in renal impairment.
Cytosar · AraC
Nucleoside analog · approved 1969 · 9 citations · FAERS AKI reporting ROR 2.85 (95% CI 2.70–3.02, 1,260 AKI reports)
Describes how this page is sourced, not how dangerous the drug is. Thinly sourced means fewer of the sourcing signals are met — not that the agent is kidney-safe. A rule-based summary, not a formal certainty appraisal.
The leukemia cornerstone whose renal danger comes from the tumor burden it melts away.
Signature lesion
Intrinsic tubular nephrotoxicity is uncommon; the major renal risk is AKI from tumor lysis syndrome during leukemia/lymphoma cytoreduction, reported at case and series level including fatal TLS. Direct cytarabine-nephrotoxicity primary literature is genuinely sparse.Source: Seymour et al., Cancer 2002
Hours to days after initiating therapy in high-burden disease.
Distilled from: “Hours to days after initiating therapy in high-burden disease.”
This agent's kidney lesions ordered by prominence — the #1 signature lesion first, then secondary and rare patterns. Cited incidence is shown where a citable figure exists; otherwise the tier stands qualitatively.
Intratubular precipitation of drug or metabolite — high-dose methotrexate and tumor lysis crystals.
Renal hypoperfusion from capillary leak and cytokine storm — IL-2 and CAR-T cytokine release syndrome.
Renal electrolyte derangement — magnesium/potassium/calcium wasting (cisplatin, anti-EGFR antibodies) or retention (FGFR-inhibitor hyperphosphatemia, tumor-lysis hyperkalemia/hyperphosphatemia).
One episode in a 1979 single-agent high-dose series; co-therapy and leukemic ADH production explain most reporting.
Tap a signature to trace where it strikes the nephron.
Crystal / Obstructive Nephropathy
Intratubular precipitation of drug or metabolite — high-dose methotrexate and tumor lysis crystals.
Pyrimidine nucleoside analog phosphorylated to ara-CTP, which incorporates into DNA and inhibits DNA polymerase, halting S-phase replication. Cornerstone of acute myeloid leukemia induction/consolidation and used in lymphomas and CNS prophylaxis (intrathecal).
Class-level context for the major non-renal toxicities of the Nucleoside analog class.
Gastrointestinal
Diarrhea, colitis, mucositis, perforation
Hepatic / Liver
Transaminitis, hepatitis, VOD/SOS
Hematologic
Cytopenias, thrombosis, TMA
Pulmonary
Pneumonitis, ILD, effusions, hypertension
7 primary references — trials, cohorts, mechanism, and reviews. Single-patient case reports are listed separately below, graded by strength. Citation metadata via PubMed / NLM.
Primary (non–case-report) references per year — a proxy for how actively the agent's renal literature is accruing. Recent years are highlighted. Reflects curation depth, not a systematic bibliometric count.
Single-patient and small-series reports, graded by evidentiary strength — A Strong (biopsy-proven plus a series and/or positive rechallenge), B Moderate, and C Limited (a single clinically-diagnosed case). Strongest first. Grades are inferred automatically from each report's abstract and journal — a heuristic ranking aid, not a formal quality appraisal.
Quoted verbatim from this agent's current FDA label (Aug 2026) — not paraphrased or interpreted. Full label on DailyMed .
Boxed warning
WARNING Only physicians experienced in cancer chemotherapy should use Cytarabine Injection. For induction therapy patients should be treated in a facility with laboratory and supportive resources sufficient to monitor drug tolerance and protect and maintain a patient compromised by drug toxicity. The main toxic effect of cytarabine is bone marrow suppression with leukopenia, thrombocytopenia and anemia. Less serious toxicity includes nausea, vomiting, diarrhea and abdominal pain, oral ulceration and hepatic dysfunction. The physician must judge possible benefit to the patient against known toxic effects of this drug in considering the advisability of therapy with cytarabine. Before making this judgment or beginning treatment, the physician should be familiar with the following text.
Everything below is FAERS — adverse events someone chose to report, about 61,947 of them for this agent. Nobody counts the patients who were fine, so none of these numbers is an incidence, a risk, or a rate: they describe what gets reported, shaped by a drug's fame, its indication, and who was watching. How these numbers work.
Only significant signals appear (95% CI lower bound above 1) — a phenotype missing here was tested and did not reach significance, except Prerenal / Hemodynamic AKI, Pseudo-AKI, Renal Cysts, Chronic Interstitial Nephropathy — outside the clinician-reviewed MedDRA term map, never queried — and ATN and AIN, queried but biopsy-bound: real cases are filed as generic “acute kidney injury”, so their absence is not a negative. As of 2026-10-01.
What reporting says about this profile's documented lesions
Reported with a death outcome
14,387 of 61,947 reports
Reported with hospitalization
24,916 of 61,947 reports
Reports per year
Yearly FAERS report volume · most recent year is partial.
Bars rank systems by summed reaction-term mentions (a report counts once per term it names) — an ordinal “more vs less reported” cue, not a tally of distinct reports. Renal & urinary first. As of 2026-10-01.
Each recommendation below is this atlas's faithful summary of the source, not a quotation from it — follow the PubMed link for the wording the society published. Summaries may be superseded; consult the current full text and individualize to the patient.
General onco-nephrology references
Where Cytarabine sits in nephrotoxicity space — each dot is an anti-cancer agent, positioned so neighbors share a kidney-injury phenotype. Its 6 closest are filled and lead to a numbered marker, matching the numbered cards below.
Fludara · Purine analog
Tumor lysis; accumulates in renal impairment.
Hydrea · Ribonucleotide reductase inhibitor
Tumor lysis in myeloproliferative disease.
Arranon · Purine analog
Tumor lysis in T-ALL.
Leustatin · Purine analog
Tumor lysis; high-dose nephrotoxicity.
Dacogen · Hypomethylating agent
Tumor lysis in MDS/AML.
Cosmegen · Antitumor antibiotic
Renal risk indirect via tumor lysis in chemosensitive pediatric tumors; hepatic veno-occlusive disease is the signature organ toxicity.
Nearest agents by kidney-injury phenotype (shared injuries, nephron target, severity, class) — a similarity approximation, not a claim of shared drug identity or mechanism.
Same-class agents ordered by their documented kidney-injury profile — atlas severity, an acute-kidney-injury FAERS signal, and how many injury types each is documented to cause. Agents nearer the top carry the lighter documented renal profile.
A comparison of documented kidney-injury data within one drug class — not a substitution recommendation. Efficacy, indication, and non-renal toxicity differ between these agents and are out of scope here. Educational only, not medical advice.
The leading contributors to Cytarabine’s clinical kidney literature on PubMed, ranked by a blend of publication volume and citation impact — filtered toward clinical work via the PubMed Humans heading and clinical publication types (trials, cohorts, case reports, guidelines, reviews). Names link to that author’s work on Cytarabine; the PMIDs beside each name are up to three of their most recent papers on it, not the full count.
Ranked by a 50/50 blend of publication volume and a position-weighted, capped Relative Citation Ratio (NIH iCite) on this agent’s renal literature; the citation count shown is the raw total, not the ranking score — counted over the 52 clinical records among all 102 PubMed matches, so counts are within-sample — bibliometric context, not an endorsement or a measure of clinical authority.