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Antitumor antibiotic

Plicamycin (mithramycin)

Mithracin · Plica

Antitumor antibiotic · approved 1970 · 7 references

An older antitumor antibiotic and bone-resorption inhibitor with cumulative, dose-limiting renal tubular toxicity.

Signature injury
Acute Tubular Necrosis
Severity
Moderate
Reversibility
Partially reversible
Onset
With repeated / cumulative dosing (days to weeks).

Signature kidney injury & incidence

Acute Tubular Necrosis — representative incidence ~5%.

Cumulative, dose-related nephrotoxicity is a recognized dose-limiting toxicity; when used for hypercalcemia, its antiresorptive potency can overshoot to symptomatic hypocalcemia. Precise modern incidence is not well quantified because the drug is now essentially obsolete. The comparative hypercalcemia-tolerability review cited here pooled trials of at least 10 patients and reported serum creatinine elevation in 5% of plicamycin-treated patients, alongside hepatotoxicity in 26% and nausea/vomiting in 23%. The creatinine figures it gives for etidronate (8%), clodronate (5%) and pamidronate (2%) are bisphosphonate rates from the same review and are not plicamycin's.

Source: Zojer, Drug Saf 1999

Reported injury signatures: Acute Tubular Necrosis, Electrolyte Disturbance.

Renal toxicity profile

  1. Acute Tubular NecrosisPrimaryDose-dependent acute tubular injury / AKI; nephrotoxicity reported even after a single 25 microgram/kg dose, with pre-existing renal impairment magnifying the effect. Cumulative-dose renal toxicity historically limited its use.
  2. Electrolyte DisturbanceSecondary

Onset timing & rechallenge

Subacute (~1–6 weeks) — With repeated / cumulative dosing (days to weeks).

Mechanism of kidney injury

Direct tubular epithelial toxicity affecting both proximal and distal segments impairs electrolyte handling, producing electrolyte wasting and, with cumulative exposure, frank acute tubular necrosis and a rising creatinine. Superimposed on this, its potent inhibition of osteoclastic bone resorption lowers serum calcium and phosphate, so the electrolyte picture reflects both the renal tubular lesion and the antiresorptive effect. Toxicity is cumulative and increases with repeated dosing and with pre-existing renal impairment.

Clinical presentation

Hypocalcemia (sometimes symptomatic), hypophosphatemia and hypokalemia with a rising creatinine; frequently accompanied by hepatotoxicity and a hemorrhagic diathesis (thrombocytopenia and clotting-factor effects), which together limited the drug's use.

Management

Discontinue for renal dysfunction; correct electrolyte derangements including hypocalcemia (calcium repletion) and provide supportive care. Bisphosphonates (and later denosumab) have entirely replaced plicamycin for hypercalcemia owing to its nephrotoxicity and hemorrhagic toxicity.

Risk factors

  • Pre-existing renal impairment
  • Repeated or high cumulative dosing
  • Concomitant nephrotoxins

Prevention

  • Avoid in patients with renal dysfunction
  • Limit cumulative dose and dosing frequency (lower antihypercalcemic doses are less toxic than antitumor doses)

Renal dose adjustment

Contraindicated/avoided in significant renal impairment because nephrotoxicity is cumulative and dose-related; lower doses are used for hypercalcemia than for antitumor effect. No validated renal dose-adjustment schema exists given its obsolescence — the practical guidance is avoidance when renal function is impaired.

Dialyzability & ESKD dosing

Not characterized; dialysis is not used for dosing. Hemodialysis would be employed only to manage AKI complications, not to remove the drug.

Differential diagnosis

Hypocalcemia here reflects both antiresorptive overshoot and tubular electrolyte wasting; distinguish from hungry-bone syndrome and from hypomagnesemia-driven hypocalcemia. The rising creatinine of cumulative ATN must be separated from prerenal azotemia of hypercalcemia-related volume depletion (which improves with hydration).

Monitoring

  • Serum calcium and phosphate (risk of overshoot hypocalcemia)
  • Liver enzymes and platelet count / coagulation (hepatic and hemorrhagic toxicity)
  • Renal function closely during therapy

Key trials & series

  • Historical hypercalcemia-of-malignancy series comparing plicamycin with emerging bisphosphonates

Clinical pearls

  • Plicamycin is a teaching relic: cumulative tubular toxicity plus a hemorrhagic diathesis is why bisphosphonates supplanted it.
  • When it was used for hypercalcemia, the danger was overshooting into symptomatic hypocalcemia.
  • Avoid entirely in renal impairment — the nephrotoxicity is dose-cumulative.

Anticancer mechanism

Aureolic-acid antitumor antibiotic that binds GC-rich DNA in the minor groove (in a magnesium-dependent fashion), displacing Sp1-family transcription factors and inhibiting RNA and protein synthesis. It also potently inhibits osteoclastic bone resorption, the basis of its historical use for hypercalcemia. Historically used for testicular germ-cell tumors and hypercalcemia of malignancy / Paget disease.

Note

The drug is no longer commercially marketed in many regions.

Guidelines & consensus

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.

  • ADQI (2026) — The nephrotoxic effects of anti-cancer therapies: consensus report of the 34th Acute Disease Quality Initiative workgroupProvides expert-based statements (modified Delphi) on preventing and managing cisplatin/platinum-associated AKI, including isotonic IV hydration, attention to volume status and concomitant nephrotoxins, and incorporates evidence that IV magnesium supplementation may reduce cisplatin-associated AKI; emphasizes risk stratification and standardized AKI definitions.Nat Rev Nephrol · PMID 41361704
  • SIRM (2022) — SIRM-SIN-AIOM: appropriateness criteria for evaluation and prevention of renal damage in the patient undergoing contrast medium examinations-consensus statements from Italian College of Radiology (SIRM), Italian College of Nephrology (SIN) and Italian Association of Medical Oncology (AIOM)Recommends eGFR-based renal risk assessment and pre/post-contrast isotonic saline or sodium bicarbonate hydration; advises maintaining a 5-7 day interval between iodinated contrast administration and cisplatin in cancer patients to reduce additive nephrotoxicity.Radiol Med · PMID 35303246
  • KDIGO (2020) — KDIGO Controversies Conference on onco-nephrology: understanding kidney impairment and solid-organ malignancies, and managing kidney cancerIdentifies platinum compounds (especially cisplatin) as leading cytotoxic causes of acute tubular injury, AKI, and electrolyte/magnesium wasting; calls for interdisciplinary onco-nephrology care, accurate GFR estimation, and individualized drug dosing in patients with reduced kidney function.Kidney Int · PMID 33126977
  • KDIGO (2020) — KDIGO Controversies Conference on onco-nephrology: kidney disease in hematological malignancies and the burden of cancer after kidney transplantationAddresses chemotherapy-associated AKI/CKD in hematologic cancer, GFR estimation and chemotherapy dosing in patients with reduced kidney function, and management priorities and research gaps for onco-nephrology care.Kidney Int · PMID 33276867
  • ADDIKD (2025) — Integrating International Consensus Guidelines for Anticancer Drug Dosing in Kidney Dysfunction (ADDIKD) into everyday practiceProvides GRADE-based, drug-specific dose-adjustment recommendations for anticancer agents in kidney dysfunction (illustrated for methotrexate, cisplatin, carboplatin and nivolumab); the recommendations build on Part 1's standardised CKD-EPI eGFR assessment rather than Cockcroft-Gault creatinine clearance.EClinicalMedicine · PMID 40290844
  • ADDIKD (2025) — Aligning kidney function assessment in patients with cancer to global practices in internal medicineThree consensus recommendations: assess kidney function by GFR (measured GFR or CKD-EPI eGFR), classify it using KDIGO categories, and use this uniform approach to dose anticancer drugs — moving cancer medicine away from Cockcroft-Gault estimated creatinine clearance.EClinicalMedicine · PMID 40290845
  • ADDIKD (2025) — A methodology for determining dosing recommendations for anticancer drugs in patients with reduced kidney functionEstablishes that, where RCT evidence is lacking, anticancer drug dosing recommendations in kidney dysfunction should be derived by critically appraising observational literature via GRADE combined with structured international multidisciplinary consensus voting.EClinicalMedicine · PMID 40290846
  • KDIGO (2013) — Diagnosis, evaluation, and management of acute kidney injury: a KDIGO summary (Part 1)Defines/stages AKI by serum creatinine and urine output; emphasizes avoiding nephrotoxins, maintaining euvolemia/perfusion, dose-adjusting drugs to kidney function, and monitoring high-risk patients — the framework applied to nephrotoxic anti-cancer agents.Crit Care · PMID 23394211
  • KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease: known knowns and known unknownsEvaluate and risk-stratify CKD, manage to delay progression and its complications, and practise explicit medication management and drug stewardship — the framework the atlas's G1–G5 eGFR banding and every renal dose-adjustment recommendation sit inside. Because the guideline excludes dialysis and transplant recipients by its own statement of scope, its recommendations do not carry to those settings, where this atlas's dialyzability and post-transplant guidance rests on other sources.Kidney Int · PMID 38519239
  • KDIGO (2021) — Executive summary of the KDIGO 2021 Guideline for the Management of Glomerular DiseasesProvides the staging/treatment framework for drug-associated glomerular lesions (e.g., bisphosphonate- and interferon-related collapsing FSGS, VEGF-inhibitor podocytopathy/proteinuria), including immunosuppression and supportive RAAS-blockade strategies.Kidney Int · PMID 34556300
  • KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Management of ANCA-Associated VasculitisUpdates immunosuppressive induction (rituximab/cyclophosphamide), incorporates avacopan and lower-dose or glucocorticoid-sparing regimens — the management framework for drug- and checkpoint-inhibitor-associated ANCA/pauci-immune glomerulonephritis.Kidney Int · PMID 38388147
  • KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Management of Lupus NephritisUpdates first-line lupus nephritis therapy to combination immunosuppression with the addition of belimumab or a calcineurin inhibitor (voclosporin) — informs management of immune-complex/lupus-like glomerulonephritis encountered with immunotherapy.Kidney Int · PMID 38182299
  • KDIGO (2025) — Executive summary of the KDIGO 2025 Clinical Practice Guideline for the Management of Immunoglobulin A Nephropathy (IgAN) and Immunoglobulin A Vasculitis (IgAV)Encourages liberal kidney biopsy and stricter proteinuria control (<0.5 g/d, ideally <0.3 g/d) with RAAS blockers, SGLT2 inhibitors, and targeted-release budesonide — the framework for IgA-dominant glomerular lesions, including those triggered by immune-modulating cancer therapy.Kidney Int · PMID 40975525

References

7 peer-reviewed references. Citation metadata via PubMed / NLM.

  1. 1.Comparative tolerability of drug therapies for hypercalcaemia of malignancy.Zojer N et al. · Drug Safety · 1999 · PMID 10554053
  2. 2.Pathophysiology and management of severe hypercalcemia.Nussbaum SR et al. · Endocrinol Metab Clin North Am · 1993 · PMID 8325291
  3. 3.Update on the medical treatment of hypercalcemia of malignancy.Hall TG et al. · Clin Pharm · 1993 · PMID 8453860
  4. 4.Anticancer drug-induced kidney disorders.Kintzel PE et al. · Drug Saf · 2001 · PMID 11219485
  5. 5.Anticancer Drug-Induced Acute Kidney Injury.Izzedine H et al. · Kidney Int Rep · 2017 · PMID 29318217
  6. 6.Conventional treatment of hypercalcemia of malignancy.Davidson TG et al. · Am J Health Syst Pharm · 2001 · PMID 11757206
  7. 7.Gallium nitrate.Hughes TE et al. · Ann Pharmacother · 1992 · PMID 1554958

Case reports & series (2)

The weakest rung of clinical evidence — single-patient and small-series reports, strongest first. Each carries a heuristic strength grade (A Strong / B Moderate / C Limited) inferred from its abstract and journal, not a formal appraisal. Weigh well below the primary references above.

  1. C1.[C · Limited]Nephrotoxicity following single dose mithramycin therapy.Benedetti RG et al. · Am J Nephrol · 1983 · PMID 6227249
  2. C2.[C · Limited][Acute fatal hepatorenal failure during treatment with mithramycin].Hémon Y et al. · Ann Fr Anesth Reanim · 1985 · PMID 3160268
Educational monograph from NephTox (nephtox.com). Not medical advice — verify against current guidelines before any clinical decision.