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Hydrazine alkylating agent

Procarbazine

Matulane · Procarb

Hydrazine alkylating agent · approved 1969 · 4 references

A classic lymphoma alkylator listed among the cytotoxics with recognized renal complications.

Signature injury
Acute Tubular Necrosis
Severity
Moderate
Reversibility
Variable
Onset
Variable; tumor-lysis-related AKI within days of starting in bulky disease, hypersensitivity-type injury after re-exposure.

Signature kidney injury & incidence

Acute Tubular Necrosis.

Not well quantified at the drug-specific level. Procarbazine appears in classic onconephrology reviews of the renal complications of cytotoxic therapy as an agent with recognized renal/urological complications, and it is part of multi-agent lymphoma regimens in which acute renal failure (often multifactorial — tumor lysis, volume depletion, combined nephrotoxins) is described. Discrete procarbazine-attributable nephrotoxicity is largely case-/review-level rather than quantified.

Source: Healy & Clarkson, Aust N Z J Med 1983 (renal complications of cytotoxic therapy)

Reported injury signatures: Acute Tubular Necrosis, Acute Interstitial Nephritis.

Renal toxicity profile

  1. Acute Tubular NecrosisPrimary
  2. Acute Interstitial NephritisSecondary

Onset timing & rechallenge

Variable / unpredictable — Tumor-lysis AKI within days in bulky disease; hypersensitivity-type injury after re-exposure.

Rechallenge: High recurrence risk — Hypersensitivity-type injury has been described after re-exposure.

Mechanism of kidney injury

As a hydrazine alkylator activated to reactive methylating and oxidizing intermediates (including hydrogen-peroxide generation), procarbazine can in principle injure renal tubular epithelium via alkylation and oxidative stress (an acute tubular pattern). Being an MAO inhibitor and a frequent hypersensitivity sensitizer, it can also contribute to a hypersensitivity/allergic acute interstitial nephritis pattern. In practice, kidney injury during procarbazine-containing regimens is usually multifactorial — tumor lysis, volume depletion, hypercalcemia, and co-administered nephrotoxins (cisplatin, methotrexate, nitrosoureas) — so isolating a pure procarbazine lesion is difficult and the published renal evidence is conservative and case-/review-based.

Clinical presentation

When implicated, a subacute creatinine rise; an ATN pattern would show granular casts and tubular proteinuria, whereas an interstitial/hypersensitivity pattern may accompany rash, fever, eosinophilia, and sterile pyuria. Hypersensitivity reactions to procarbazine are otherwise well recognized (pulmonary, dermatologic).

Management

Supportive: hydration, correct electrolytes and treat tumor lysis; hold the drug for significant AKI or hypersensitivity. For suspected interstitial nephritis, discontinue and consider corticosteroids with nephrology input. Within combination regimens, identify and address the dominant contributor.

Risk factors

  • Bulky/chemosensitive disease (tumor lysis)
  • Concurrent nephrotoxins in combination regimens (cisplatin, methotrexate, nitrosoureas)
  • Volume depletion
  • Prior hypersensitivity to procarbazine

Prevention

  • Tumor-lysis prophylaxis (hydration, urate-lowering) in high-burden disease
  • Recognize and avoid re-challenge after hypersensitivity

Renal dose adjustment

No well-validated renal dosing algorithm; use caution in renal impairment given active metabolite handling, and consider dose reduction with close monitoring. Hepatic impairment and MAO-inhibitor drug/dietary interactions are the better-defined dosing concerns.

Dialyzability & ESKD dosing

Dialyzability not well characterized; the parent drug is short-lived and extensively metabolized. No established ESKD dosing — manage clinically with attention to active metabolites.

Differential diagnosis

In a procarbazine regimen, separate tumor-lysis AKI, prerenal volume depletion, and co-administered platinum/methotrexate/nitrosourea nephrotoxicity from a drug-specific tubular or hypersensitivity interstitial lesion; rash/fever/eosinophilia and sterile pyuria point to interstitial nephritis.

Monitoring

  • Tumor-lysis labs (potassium, phosphate, uric acid, calcium) in bulky disease
  • Urinalysis if creatinine rises (granular casts vs sterile pyuria)
  • Signs of hypersensitivity (rash, fever, eosinophilia)

Key trials & series

  • Healy & Clarkson Aust N Z J Med 1983 cytotoxic renal-complications review (lists procarbazine)
  • Historical MOPP and PCV regimen experience

Clinical pearls

  • AKI during a procarbazine-containing regimen is usually multifactorial — look for tumor lysis, volume depletion, and partner nephrotoxins before blaming procarbazine.
  • Procarbazine is a recognized hypersensitivity sensitizer; rash/fever/eosinophilia with a creatinine rise suggests interstitial nephritis — stop and consider steroids.
  • It is an MAO inhibitor — the dominant safety teaching is dietary/drug interactions, with renal injury a secondary, conservative concern.
  • Give tumor-lysis prophylaxis in bulky lymphoma where procarbazine regimens are used.

Anticancer mechanism

Oral hydrazine-derivative alkylating agent that is metabolically activated (CYP- and oxidation-dependent) to reactive methyldiazonium species that methylate DNA and generate hydrogen peroxide, causing DNA strand breaks. A monoamine-oxidase inhibitor with dietary/drug interactions. Long-standing component of lymphoma regimens (MOPP) and brain-tumor therapy (PCV).

Note

Renal-specific literature is thin and historical; kidney injury in procarbazine regimens is typically multifactorial. Classification here (ATN signature with possible hypersensitivity interstitial nephritis) is conservative and class-/case-based rather than quantified.

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) — Conventional cytotoxic chemotherapy-associated nephrotoxicity: consensus report of the 34th Acute Disease Quality Initiative (ADQI) WorkgroupCisplatin is identified as a leading cytotoxic nephrotoxin; the workgroup details preventive measures (adequate isotonic hydration, correction of volume depletion, avoidance of concurrent nephrotoxins, attention to electrolyte/magnesium wasting) and management of cisplatin-associated AKI, with a research agenda for knowledge gaps.Kidney Int · PMID 41881107
  • 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

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

  1. 1.Renal complications of cytotoxic therapy.Healy HG et al. · Aust N Z J Med · 1983 · PMID 6228218
  2. 2.Long-term survival of patients with multiple myeloma and acute renal failure at presentation.Lazarus HM et al. · Am J Kidney Dis · 1983 · PMID 6402926
  3. 3.Acute Kidney Injury in Patients with Cancer.Rosner MH et al. · N Engl J Med · 2017 · PMID 28467867
  4. 4.Conventional Chemotherapy Nephrotoxicity.Gupta S et al. · Adv Chronic Kidney Dis · 2021 · PMID 35190107
Educational monograph from NephTox (nephtox.com). Not medical advice — verify against current guidelines before any clinical decision.