Back to explorer

Anthracycline

Doxorubicin

Adriamycin · Doxo

The classic anthracycline whose podocyte-injury model defines experimental FSGS, though clinical proteinuria is rare.

MildAnthracycline · approved 1974
Breast cancerHodgkin and non-Hodgkin lymphomaSarcomasAcute leukemias

Signature kidney injury

Glomerular Injury / Proteinuria

Adriamycin nephropathy is the canonical rodent model of podocyte injury and focal segmental glomerulosclerosis (FSGS); clinically significant glomerular disease from therapeutic dosing in patients is rare and largely case-level.

Source: Lee & Harris, Nephrology (Carlton) 2011 (model review)

Mechanism of kidney injury

In the experimental model, doxorubicin directly injures the podocyte: reactive oxygen species and mitochondrial dysfunction disrupt the actin cytoskeleton and slit diaphragm, causing foot-process effacement, podocyte detachment/apoptosis and a loss of glomerular permselectivity that progresses to segmental sclerosis with secondary tubulointerstitial inflammation and fibrosis. Susceptibility is strain- and gene-dependent (e.g., loci on chromosome 16 in mice), underscoring a genetic component to podocyte vulnerability. The human correlate is uncommon, which is why this is primarily a model rather than a frequent clinical toxicity.

Clinical presentation

Heavy (nephrotic-range) proteinuria, hypoalbuminemia and edema in the experimental setting; in patients, overt glomerular disease is unusual and, when seen, presents as proteinuria with or without a fall in GFR.

Onset

Subacute in models (over weeks); clinical events rare and variable.

Reversibility

Variable

Anticancer mechanism

Anthracycline antitumor antibiotic that intercalates DNA, poisons topoisomerase II (trapping the cleavable complex and producing double-strand breaks), and generates reactive oxygen species via redox cycling of its quinone moiety, driving apoptosis. Broadly used across breast cancer, lymphomas, sarcomas and acute leukemias.

Management

No specific renal therapy is established for the rare clinical glomerulopathy; supportive care with RAAS blockade (ACE inhibitor or ARB) to reduce proteinuria and management of any underlying glomerular disease. Liposomal formulations alter tissue distribution and are not associated with this glomerular signal clinically.

Risk factors

  • High cumulative exposure (experimental)
  • Pre-existing glomerular disease or podocyte susceptibility

Prevention

  • Adhere to cumulative dose limits (primarily for cardiotoxicity)
  • Monitor for proteinuria in susceptible patients
Note · Best known as an experimental podocyte-injury / FSGS model; clinical nephrotoxicity in patients is rare and largely case-level. The model's value is mechanistic insight into podocytopathy, not a warning about routine clinical use.

Clinical depth

Renal dose adjustment

No renal dose adjustment is required — doxorubicin is hepatically metabolized and biliary-excreted, so dosing is guided by hepatic function and bilirubin rather than renal function. Renal impairment does not mandate dose reduction.

Dialyzability & ESKD dosing

Not dialyzable to any clinically meaningful extent; doxorubicin is large, highly protein- and tissue-bound, with a very large volume of distribution, so hemodialysis does not remove it and no supplemental dosing is needed in ESKD.

Differential diagnosis

In a patient on doxorubicin with proteinuria, the differential is dominated by other causes of FSGS/podocytopathy (primary FSGS, viral, obesity-related, secondary maladaptive) and paraneoplastic glomerulonephritis; a kidney biopsy distinguishes drug-attributable podocyte injury from these far more common etiologies.

Monitoring

  • Cumulative anthracycline dose and cardiac function (LVEF) — the principal dose-limiting toxicity
  • Urinalysis/UPCR in patients who develop edema or proteinuria

Key trials & series

  • No clinical trial carries a renal signal; the evidence base is the experimental adriamycin nephropathy literature

Clinical pearls

  • Adriamycin nephropathy is a workhorse research model of FSGS, not a common clinical nephrotoxicity — keep the distinction clear.
  • Doxorubicin is dosed by hepatic/bilirubin status, not renal function, and is not dialyzable.
  • Real-world proteinuria in a doxorubicin-treated patient is more likely another glomerulopathy; biopsy before attributing it to the drug.

Where it strikes

Nephron segments

Glomerulus

Filtration barrier (podocytes + endothelium)

Injury signatures

Glomerular Injury / Proteinuria

Beyond the kidney

Class-level context for the major non-renal toxicities of anthracyclines.

Cardiac

Cardiomyopathy, QT, ischemia, myocarditis

  • Dose-dependent cardiomyopathy and heart failure

Hematologic

Cytopenias, thrombosis, TMA

  • Myelosuppression

Related agents

Other agents sharing the same signature kidney injury.

Bevacizumab

Avastin · Anti-VEGF antibody

Profile

Proteinuria, hypertension, glomerular TMA.

GLOMHTNTMA
ModerateOpen →

mTOR inhibitors (everolimus · temsirolimus)

mTOR inhibitor

Profile

Podocyte injury → proteinuria and FSGS.

GLOMATN
MildOpen →

Sirolimus

Rapamune · mTOR inhibitor

Profile

Proteinuria, cast nephropathy, delayed graft recovery.

GLOMATN
ModerateOpen →