Back to explorer

Taxane

Paclitaxel

Taxol · PTX

A taxane that mostly spares the kidney, with reactions tied to its vehicle rather than the tubule.

MildTaxane · approved 1992
Breast cancerOvarian cancerNon-small-cell lung cancer

Signature kidney injury

Prerenal / Hemodynamic AKI

Paclitaxel has low direct nephrotoxicity. Hypersensitivity/infusion reactions - historically attributed to the Cremophor EL (polyoxyethylated castor oil) vehicle via complement activation, with newer evidence for IgE-mediated reactions - and associated fluid shifts can transiently compromise renal perfusion, but structural kidney injury is uncommon and not well quantified.

Source: Picard & Castells, Clin Rev Allergy Immunol 2015

Mechanism of kidney injury

No characteristic intrinsic tubular or glomerular toxin effect. Renal compromise, when it occurs, is hemodynamic: a hypersensitivity reaction with hypotension or large fluid shifts reduces renal perfusion (prerenal). The Cremophor EL solvent (absent in nab-paclitaxel) drives many infusion reactions through complement activation and possible IgE mechanisms.

Clinical presentation

Usually normal renal function; during a hypersensitivity reaction, flushing, dyspnea, back pain, and transient hypotension with a prerenal creatinine bump and bland urinalysis. Reactions cluster within minutes of the first or second infusion.

Onset

Infusion reactions occur during or shortly after administration (typically first/second exposure); any prerenal AKI follows the hemodynamic instability.

Reversibility

Reversible

Anticancer mechanism

Binds beta-tubulin and stabilizes microtubules, preventing depolymerization, freezing the mitotic spindle, and triggering apoptosis. Broadly used in breast, ovarian, lung, and other solid tumors.

Management

Stop the infusion and treat hypersensitivity (epinephrine for anaphylaxis, fluids, antihistamines, steroids); restore hemodynamics. Prerenal AKI reverses with perfusion. Rapid drug desensitization allows safe re-treatment after reactions. No drug-specific renal antidote is needed.

Risk factors

  • Severe infusion/hypersensitivity reactions
  • Cremophor-EL-containing (solvent-based) formulation
  • Volume depletion and concurrent nephrotoxins
  • Pre-existing renal impairment

Prevention

  • Standard premedication: corticosteroid, H1-antihistamine, and H2-blocker before infusion
  • Slow, monitored infusion with prompt management of reactions; consider nab-paclitaxel or desensitization in prior reactors
  • Maintain euvolemia and minimize additive nephrotoxins
Note · Low direct nephrotoxicity; renal events are vehicle/hypersensitivity- and hemodynamics-driven and reversible.

Clinical depth

Renal dose adjustment

Hepatically (CYP2C8/CYP3A4) metabolized and biliary excreted - no renal dose adjustment; reduce dose for significant hepatic impairment. Renal impairment does not require dose change.

Dialyzability & ESKD dosing

Highly protein-bound, large volume of distribution, and non-renally cleared; not dialyzable. Can be given without regard to dialysis timing.

Differential diagnosis

Hypersensitivity-driven prerenal AKI (infusion-timed hypotension, bland urine) vs concurrent nephrotoxin ATN vs tumor- or sepsis-related AKI. The temporal link to the infusion reaction is the clue.

Monitoring

  • Vital signs during infusion (especially first 1-2 cycles) for hypersensitivity
  • Volume status and creatinine if a reaction occurs
  • CBC and peripheral neuropathy assessment per cycle

Key trials & series

  • Picard & Castells Clin Rev Allergy Immunol 2015 taxane hypersensitivity/desensitization review

Clinical pearls

  • The kidney risk with paclitaxel is the vehicle and the reaction, not the molecule - premedicate and it is rare.
  • Switching to nab-paclitaxel removes Cremophor EL and most solvent-related reactions.
  • After a hypersensitivity reaction, desensitization allows safe continuation of an effective drug.

Where it strikes

Nephron segments

Vasculature / Endothelium

Glomerular & peritubular capillaries

Injury signatures

Prerenal / Hemodynamic AKI

Beyond the kidney

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

Neurologic

Neuropathy, encephalopathy, ICANS, PRES

  • Peripheral neuropathy (taxanes, vinca)

Hematologic

Cytopenias, thrombosis, TMA

  • Myelosuppression

Immune / Infusion

CRS, infusion reactions, irAEs, anaphylaxis

  • Hypersensitivity (taxane vehicles)

Related agents

Other agents sharing the same signature kidney injury.

Bendamustine

Treanda · Alkylator

Profile

Tumor lysis-mediated AKI is the principal risk; TMA is rare.

PRETMALYTE
ModerateOpen →

Dacarbazine

DTIC · Alkylator

Profile

Rare hepatic veno-occlusive disease; minimal direct renal injury.

PRE
MildOpen →

Capecitabine

Xeloda · Pyrimidine analog (oral 5-FU)

Profile

Diarrhea-driven prerenal AKI; dose-adjust for CrCl.

PRETMA
MildOpen →