Esophogeal Cancer

The role of PDT with PHOTOFRIN® (porfimer sodium) for injection

PHOTOFRIN® is indicated for palliation of patients with completely obstructing esophageal cancer, or of patients with partially obstructing esophageal cancer who, in the opinion of their physician, cannot be satisfactorily treated with Nd:YAG laser therapy.

Objective tumor response

PHOTOFRIN® was evaluated in a multicenter, single-arm study of patients (n=17) with completely obstructing esophageal cancer.

Objective tumor response after single course of PHOTOFRIN® therapy1

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Note: Data based on a multicenter, single-arm study that assessed the efficacy of PDT with PHOTOFRIN® in 17 patients with completely obstructing esophageal carcinoma. A course of PDT therapy consisted of one injection of PHOTOFRIN® (2 mg/kg administered as a slow intravenous injection over 3–5 minutes) followed by up to two non-thermal applications of 630 nm laser light. Light doses of 300 J/cm of diffuser length were used. Assessments were made at 1 week and 1 month after the last treatment procedure. After a single course of therapy, 94% of patients obtained an objective tumor response and 76% of patients experienced some palliation of their dysphagia. After one course of therapy, there was a statistically significant improvement in mean dysphagia grade (1.5 units, p <0.05) and 13 of 17 patients could swallow liquids without difficulty 1 week and/or 1 month after treatment. Based on all courses, three patients achieved a complete tumor response (CR). In two of these patients, the CR was documented only at Week 1 as they had no further assessments. The third patient achieved a CR after a second course of therapy, which was supported by negative histopathology and maintained for the entire follow-up of 6 months.

Adverse Reactions Reported in ≥5% of Patients with Obstructing Esophageal Cancer1

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Important Safety Information and Indication

Contraindications

  • PHOTOFRIN® is contraindicated in patients with porphyria
  • Photodynamic Therapy (PDT) is contraindicated in patients with an existing tracheoesophageal or bronchoesophageal fistula
  • PDT is contraindicated in patients with tumors eroding into a major blood vessel
  • PDT is not suitable for emergency treatment of patients with severe acute respiratory distress caused by an obstructing endobronchial lesion because 40 to 50 hours are required between injection with PHOTOFRIN and laser light treatment
  • PDT is not suitable for patients with esophageal or gastric varices, or patients with esophageal ulcers >1 cm in diameter

Warnings and Precautions

  • Tracheoesophageal or bronchoesophageal fistula can occur if esophageal tumor is eroding into trachea or bronchial tree
  • Gastrointestinal perforation can occur
  • High risk of bleeding in patients with esophageal varices
  • High risk for fatal massive hemoptysis with endobronchial tumors that are: large, centrally located; cavitating; extensive, extrinsic to the bronchus
  • After treatment of high-grade dysplasia (HGD) in Barrett’s esophagus (BE), monitor endoscopic biopsy every three months, until four consecutive negative evaluations for HGD have been recorded
  • Photosensitivity can be expected; ocular sensitivity is possible
  • Allow 2-4 weeks between PDT and subsequent radiotherapy
  • Substernal chest pain may occur after treatment
  • Treatment induced inflammation can cause airway obstruction. Administer with caution to patients with tumors in locations where treatment-induced inflammation can obstruct the main airway
  • Esophageal stenosis occurs frequently after treatment of HGD in BE
  • Patients with hepatic or renal impairment may need longer precautionary measures for photosensitivity
  • Thromboembolic events can occur following photodynamic therapy with PHOTOFRIN

Adverse Reactions

Most common adverse reactions reported during clinical trials (>10% of patients) are:

  • Esophageal Cancer: Anemia, pleural effusion, pyrexia, constipation, nausea, chest pain, pain, abdominal pain, dyspnoea, photosensitivity reaction, pneumonia, vomiting, insomnia, back pain, pharyngitis
  • Obstructing Endobronchial Cancer: Dyspnoea, photosensitivity reaction, hemoptysis, pyrexia, cough, pneumonia
  • Superficial Endobronchial Tumors: Exudate, photosensitivity reaction, bronchial obstruction, edema, bronchostenosis
  • High-Grade Dysplasia in Barrett’s Esophagus: Photosensitivity reaction, esophageal stenosis, vomiting, chest pain, nausea, pyrexia, constipation, dysphagia, abdominal pain, pleural effusion, dehydration

These are not all the possible side effects of PHOTOFRIN. For more information call your healthcare provider. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088 or call Concordia Laboratories Inc. at 1-866-248-2039.

PHOTOFRIN is indicated for:

Esophageal Cancer

  • Palliation of patients with completely obstructing esophageal cancer, or of patients with partially obstructing esophageal cancer who, in the opinion of their physician, cannot be satisfactorily treated with Nd:YAG laser therapy

Endobronchial Cancer

  • Treatment of microinvasive endobronchial non-small-cell lung cancer (NSCLC) in patients for whom surgery and radiotherapy are not indicated
  • Reduction of obstruction and palliation of symptoms in patients with completely or partially obstructing endobronchial NSCLC

High-Grade Dysplasia in Barrett’s Esophagus

  • Ablation of high-grade dysplasia in Barrett’s esophagus patients who do not undergo esophagectomy

Please see accompanying full Prescribing Information for Photofrin

References: 1. PHOTOFRIN® (porfimer sodium for injection) [package insert]. Chicago, IL: Pinnacle Biologics.