Dostarlimab

INDICATIONS AND USAGE JEMPERLI is a programmed death receptor-1 (PD-1)–blocking antibody indicated: Endometrial Cancer • in combination with carboplatin and paclitaxel, followed by JEMPERLI as a single agent, for the treatment of adult patients with primary advanced or recurrent endometrial cancer (EC). ( 1.1 ) • as a single agent for the treatment of adult patients with mismatch repair deficient (dMMR) recurrent or advanced EC, as determined by an FDA-approved test, that has progressed on or following prior treatment with a platinum-containing regimen in any setting and are not candidates for curative surgery or radiation. ( 1.1 , 2.1 ) Mismatch Repair Deficient Recurrent or Advanced Solid Tumors • as a single agent for the treatment of adult patients with dMMR recurrent or advanced solid tumors, as determined by an FDA-approved test, that have progressed on or following prior treatment and who have no satisfactory alternative treatment options. 1 ( 1.2 , 2.1 ) 1 This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). ( 1.2 ) 1.1 Endometrial Cancer JEMPERLI, in combination with carboplatin and paclitaxel, followed by JEMPERLI as a single agent, is indicated for the treatment of adult patients with primary advanced or recurrent endometrial cancer (EC). JEMPERLI, as a single agent, is indicated for the treatment of adult patients with mismatch repair deficient (dMMR) recurrent or advanced EC, as determined by an FDA-approved test, that has progressed on or following prior treatment with a platinum-containing regimen in any setting and are not candidates for curative surgery or radiation [see Dosage and Administration ( 2.1 )]. 1.2 Mismatch Repair Deficient Recurrent or Advanced Solid Tumors JEMPERLI, as a single agent, is indicated for the treatment of adult patients with dMMR recurrent or advanced solid tumors, as determined by an FDA-approved test, that have progressed on or following prior treatment and who have no satisfactory alternative treatment options [see Dosage and Administration ( 2.1 )]. This indication is approved under accelerated approval based on tumor response rate and durability of response [see Clinical Studies ( 14.2 )]. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s).

DOSAGE AND ADMINISTRATION • JEMPERLI, in combination with carboplatin and paclitaxel, for primary advanced or recurrent EC: 500 mg every 3 weeks for 6 cycles followed by 1,000 mg monotherapy every 6 weeks for all cycles thereafter. ( 2.2 ) • JEMPERLI, as a single agent, for dMMR recurrent or advanced EC: 500 mg every 3 weeks for 4 cycles followed by 1,000 mg every 6 weeks for all cycles thereafter. ( 2.2 ) • JEMPERLI, as a single agent, for dMMR recurrent or advanced solid tumors: 500 mg every 3 weeks for 4 cycles followed by 1,000 mg every 6 weeks for all cycles thereafter. ( 2.2 ) • Administer as an intravenous infusion over 30 minutes. ( 2.2 ) • For complete dosing instructions, see full prescribing information. 2.1 Patient Selection Single Agent Select patients for treatment with JEMPERLI as a single agent based on the presence of dMMR in tumor specimens in: • recurrent or advanced EC [see Clinical Studies ( 14.1 )] . • recurrent or advanced solid tumors [see Clinical Studies ( 14.2 )] . Information on FDA-approved tests for the detection of dMMR status is available at https://www.fda.gov/companiondiagnostics . Because the effect of prior chemotherapy on test results for dMMR in patients with high-grade gliomas is unclear, it is recommended to test for this marker in the primary tumor specimen obtained prior to initiation of temozolomide chemotherapy in patients with high-grade gliomas. 2.2 Recommended Dosage The recommended dosage for JEMPERLI is presented in Table 1 . Table 1. Recommended Dosage of JEMPERLI dMMR = Mismatch Repair Deficient; EC = endometrial cancer. a 30-minute intravenous infusion. b Refer to the Prescribing Information for the agents administered in combination with JEMPERLI, as appropriate. Indication Recommended Dosage Duration/Timing of Treatment Combination Therapy Adults with primary advanced or recurrent EC 500 mg a JEMPERLI every 3 weeks for 6 cycles in combination with carboplatin and paclitaxel b followed by 1,000 mg JEMPERLI as monotherapy every 6 weeks for all cycles thereafter. Administer JEMPERLI prior to carboplatin and paclitaxel when given on the same day. Until disease progression, unacceptable toxicity, or up to 3 years. Monotherapy Adults with dMMR recurrent or advanced EC and dMMR recurrent or advanced solid tumors 500 mg a JEMPERLI every 3 weeks for 4 cycles followed by 1,000 mg a JEMPERLI every 6 weeks for all cycles thereafter. Until disease progression or unacceptable toxicity. 2.3 Dosage Modifications for Adverse Reactions No dose reductions of JEMPERLI are recommended. In general, withhold JEMPERLI for severe (Grade 3) immune‑mediated adverse reactions. Permanently discontinue JEMPERLI for life‑threatening (Grade 4) immune‑mediated adverse reactions, recurrent severe (Grade 3) immune-mediated reactions that require systemic immunosuppressive treatment, or an inability to reduce corticosteroid dose to 10 mg or less of prednisone equivalent per day within 12 weeks of initiating steroids. Dosage modifications for JEMPERLI for adverse reactions that require management different from these general guidelines are summarized in Table 2 . Table 2. Recommended Dosage Modifications for Adverse Reactions ALT = alanine aminotransferase; AST = aspartate aminotransferase; DRESS = drug rash with eosinophilia and systemic symptoms; SJS = Stevens-Johnson syndrome; TEN = toxic epidermal necrolysis; ULN = upper limit of normal. a Based on National Cancer Institute Common Terminology Criteria for Adverse Events, Version 5.0. b Resume in patients with complete or partial resolution (Grade 0 to 1) after corticosteroid taper. Permanently discontinue if no complete or partial resolution within 12 weeks of initiating steroids or inability to reduce prednisone to less than 10 mg/day (or equivalent) within 12 weeks of initiating steroids. c If AST and ALT are less than or equal to ULN at baseline in patients with liver involvement, withhold or permanently discontinue JEMPERLI based on recommendations for hepatitis with no liver involvement. Adverse Reaction Severity a Dosage Modification Immune-Mediated Adverse Reactions [see Warnings and Precautions ( 5.1 )] Pneumonitis Grade 2 Withhold b Grade 3 or 4 or recurrent Grade 2 Permanently discontinue Colitis Grade 2 or 3 Withhold b Grade 4 Permanently discontinue Hepatitis with no tumor involvement of the liver AST or ALT increases to more than 3 and up to 8 times ULN or Total bilirubin increases to more than 1.5 and up to 3 times ULN Withhold b AST or ALT increases to more than 8 times ULN or Total bilirubin increases to more than 3 times ULN Permanently discontinue Hepatitis with tumor involvement of the liver c Baseline AST or ALT is more than 1 and up to 3 times ULN and increases to more than 5 and up to 10 times ULN or Baseline AST or ALT is more than 3 and up to 5 times ULN and increases to more than 8 and up to 10 times ULN Withhold b AST or ALT increases to more than 10 times ULN or Total bilirubin increases to more than 3 times ULN Permanently discontinue Endocrinopathies Grade 2, 3, or 4 Withhold until clinically stable or permanently discontinue, depending on severity b Nephritis with renal dysfunction Grade 2 or 3 increased blood creatinine Withhold b Grade 4 increased blood creatinine Permanently discontinue Exfoliative dermatologic conditions Suspected SJS, TEN, or DRESS Withhold b Confirmed SJS, TEN, or DRESS Permanently discontinue Myocarditis Grade 2, 3, or 4 Permanently discontinue Neurological toxicities Grade 2 Withhold b Grade 3 or 4 Permanently discontinue Other Adverse Reactions Infusion-related reactions [see Warnings and Precautions ( 5.2 )] Grade 1 or 2 Interrupt or slow the rate of infusion Grade 3 or 4 Permanently discontinue 2.4 Preparation and Administration Preparation for Intravenous Infusion • Visually inspect the solution for particulate matter and discoloration. The solution is clear to slightly opalescent, colorless to yellow. Discard the vial if visible particles are observed. • Do not shake. • JEMPERLI is compatible with an infusion bag made of polyolefin, ethylene vinyl acetate, or polyvinyl chloride with di(2-ethylhexyl) phthalate (DEHP). • For the 500-mg dose, withdraw 10 mL of JEMPERLI from a vial using a disposable sterile syringe made of polypropylene and dilute into an intravenous infusion bag containing 0.9% Sodium Chloride Injection, USP or 5% Dextrose Injection, USP to a final concentration between 2 to 10 mg/mL (maximum 250 mL). • For the 1,000-mg dose, withdraw 10 mL from each of 2 vials (withdraw 20 mL total) and dilute into an intravenous bag containing 0.9% Sodium Chloride Injection, USP or 5% Dextrose Injection, USP to a final concentration between 4 to 10 mg/mL (maximum 250 mL). • Mix diluted solution by gentle inversion. Do not shake. • Discard any unused portion left in the vial. Storage of Infusion Solution Store in the original carton until time of preparation in order to protect from light. The prepared dose may be stored either: • At room temperature for no more than 6 hours from the time of preparation until the end of infusion. • Under refrigeration at 2°C to 8°C (36ºF to 46ºF) for no more than 24 hours from time of preparation until end of infusion. If refrigerated, allow the diluted solution to come to room temperature prior to administration. Discard after 6 hours at room temperature or after 24 hours under refrigeration. Do not freeze. Administration Administer infusion solution intravenously over 30 minutes through an intravenous line using tubing made of polyvinyl chloride or platinum cured silicon; fittings made of polyvinyl chloride or polycarbonate; and a sterile, non-pyrogenic, low‑protein binding, 0.2-micron, in-line or add-on filter. JEMPERLI must not be administered as an intravenous push or bolus injection. Do not co‑administer other drugs through the same infusion line.

WARNINGS AND PRECAUTIONS • Immune-mediated adverse reactions, which may be severe or fatal, can occur in any organ system or tissue, including the following: immune‑mediated pneumonitis, immune-mediated colitis, immune‑mediated hepatitis, immune-mediated endocrinopathies, immune-mediated nephritis with renal dysfunction, immune‑mediated dermatologic adverse reactions, and solid organ transplant rejection. Monitor for signs and symptoms of immune‑mediated adverse reactions. Evaluate clinical chemistries, including liver enzymes, creatinine, and thyroid function, at baseline and periodically during treatment. Withhold or permanently discontinue JEMPERLI and administer corticosteroids based on the severity of reaction. ( 2.3 , 5.1 ) • Infusion-related reactions: Interrupt, slow the rate of infusion, or permanently discontinue JEMPERLI based on severity of reaction. ( 2.3 , 5.2 ) • Complications of allogeneic hematopoietic stem cell transplantation (HSCT): Fatal and other serious complications can occur in patients who receive allogeneic HSCT before or after being treated with a PD‑1/PD-L1–blocking antibody. ( 5.3 ) • Embryo-fetal toxicity: Can cause fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception. ( 5.4 , 8.1 , 8.3 ) 5.1 Severe and Fatal Immune-Mediated Adverse Reactions JEMPERLI is a monoclonal antibody that belongs to a class of drugs that bind to either the programmed death receptor-1 (PD-1) or PD-ligand 1 (PD-L1), blocking the PD-1/PD-L1 pathway, thereby removing inhibition of the immune response, potentially breaking peripheral tolerance, and inducing immune-mediated adverse reactions. Important immune-mediated adverse reactions listed in WARNINGS AND PRECAUTIONS may not include all possible severe and fatal immune‑mediated reactions. Immune-mediated adverse reactions, which can be severe or fatal, can occur in any organ system or tissue. Immune‑mediated adverse reactions can occur at any time after starting a PD-1/PD-L1–blocking antibody. While immune-mediated adverse reactions usually manifest during treatment with PD-1/PD-L1–blocking antibodies, they can also manifest after discontinuation of PD-1/PD-L1–blocking antibodies. Early identification and management of immune-mediated adverse reactions are essential to ensure safe use of PD‑1/PD‑L1–blocking antibodies. Monitor closely for symptoms and signs that may be clinical manifestations of underlying immune-mediated adverse reactions. Evaluate liver enzymes, creatinine, and thyroid function tests at baseline and periodically during treatment. In cases of suspected immune-mediated adverse reactions, initiate appropriate workup to exclude alternative etiologies, including infection. Institute medical management promptly, including specialty consultation as appropriate. Withhold or permanently discontinue JEMPERLI depending on severity [see Dosage and Administration ( 2.3 )] . In general, if JEMPERLI requires interruption or discontinuation, administer systemic corticosteroids (1 to 2 mg/kg/day prednisone or equivalent) until improvement to Grade 1 or less. Upon improvement to Grade 1 or less, initiate corticosteroid taper and continue to taper over at least 1 month. Consider administration of other systemic immunosuppressants in patients whose immune-mediated adverse reaction is not controlled with corticosteroids. Toxicity management guidelines for adverse reactions that do not necessarily require systemic steroids (e.g., endocrinopathies, dermatologic reactions) are discussed below. Immune-Mediated Pneumonitis JEMPERLI can cause immune-mediated pneumonitis, which can be fatal. In patients treated with other PD-1/PD-L1–blocking antibodies, the incidence of pneumonitis is higher in patients who have received prior thoracic radiation. Immune-mediated pneumonitis occurred in 2.3% (14/605) of patients receiving JEMPERLI, including Grade 2 (1.3%), Grade 3 (0.8%) and Grade 4 (0.2%) pneumonitis. Pneumonitis led to discontinuation of JEMPERLI in 1.3% of patients. Systemic corticosteroids were required in 79% (11/14) of patients with pneumonitis. Pneumonitis resolved in 11 of the 14 patients. JEMPERLI was withheld for 9 patients. Five patients reinitiated JEMPERLI after symptom improvement; of these, 2 patients had recurrence of pneumonitis. Immune-Mediated Colitis JEMPERLI can cause immune-mediated colitis. Cytomegalovirus infection/reactivation have occurred in patients with corticosteroid-refractory immune-mediated colitis treated with PD-1/PD-L1–blocking antibodies. In cases of corticosteroid-refractory colitis, consider repeating infectious workup to exclude alternative etiologies. Immune-mediated colitis occurred in 1.3% (8/605) of patients receiving JEMPERLI, including Grade 2 (0.7%) and Grade 3 (0.7%) adverse reactions. Colitis led to discontinuation of JEMPERLI in 1 (0.2%) patient. Systemic corticosteroids were required in 75% (6/8) of patients with colitis. Colitis resolved in 5 of the 8 patients. Of the 4 patients in whom JEMPERLI was withheld for colitis, all reinitiated treatment with JEMPERLI; of these, 1 patient had recurrence of colitis. Immune-Mediated Hepatitis JEMPERLI can cause immune-mediated hepatitis, which can be fatal. Immune-mediated hepatitis occurred in 0.5% (3/605) of patients receiving JEMPERLI, all were Grade 3. Hepatitis led to discontinuation of JEMPERLI in 1 (0.2%) patient. Systemic corticosteroids were required in 2 patients with hepatitis and the events resolved in 2 of the 3 patients. Immune-Mediated Endocrinopathies Adrenal Insufficiency: JEMPERLI can cause primary or secondary adrenal insufficiency. For Grade 2 or higher adrenal insufficiency, initiate symptomatic treatment per institutional guidelines, including hormone replacement as clinically indicated. Withhold or permanently discontinue JEMPERLI depending on severity [see Dosage and Administration ( 2.3 )] . Adrenal insufficiency occurred in 1.2% (7/605) patients receiving JEMPERLI, including Grade 2 (0.5%) and Grade 3 (0.7%). Adrenal insufficiency resulted in discontinuation in 1 (0.2%) patient and resolved in 4 of the 7 patients. Of the 4 patients in whom JEMPERLI was withheld for adrenal insufficiency, all reinitiated treatment with JEMPERLI. Systemic corticosteroids were required in 5 of the 7 patients with adrenal insufficiency. Hypophysitis: JEMPERLI can cause immune-mediated hypophysitis. Hypophysitis can present with acute symptoms associated with mass effect such as headache, photophobia, or visual field cuts. Hypophysitis can cause hypopituitarism. Initiate hormone replacement as clinically indicated. Withhold or permanently discontinue JEMPERLI depending on severity [see Dosage and Administration ( 2.3 )] . JEMPERLI in Combination with Carboplatin and Paclitaxel: Hypophysitis (Grade 3) occurred in 0.4% (1/241) of patients receiving JEMPERLI in combination with carboplatin and paclitaxel. Systemic corticosteroids were required, and the event resolved. JEMPERLI was withheld and the patient reinitiated treatment. JEMPERLI as a Single Agent: Hypophysitis (Grade 2) occurred in 0.2% (1/605) of patients receiving JEMPERLI as a single agent. Systemic corticosteroids were required, and the event did not resolve. JEMPERLI was withheld and the patient reinitiated treatment. Thyroid Disorders: JEMPERLI can cause immune-mediated thyroid disorders. Thyroiditis can present with or without endocrinopathy. Hypothyroidism can follow hyperthyroidism. Initiate thyroid hormone replacement or medical management of hyperthyroidism as clinically indicated. Withhold or permanently discontinue JEMPERLI depending on severity [see Dosage and Administration ( 2.3 )] . Thyroiditis: Thyroiditis occurred in 0.5% (3/605) of patients receiving JEMPERLI; all were Grade 2. Systemic corticosteroids were required in 1 of 3 patients and anti-thyroid therapy was required for 2 of 3 patients with thyroiditis. JEMPERLI was withheld for 1 patient and the patient reiniti

CONTRAINDICATIONS None. None. ( 4 )

ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: • Severe and fatal immune-mediated adverse reactions [see Warnings and Precautions ( 5.1 )] • Infusion-related reactions [see Warnings and Precautions ( 5.2 )] • Most common adverse reactions (≥20%), including laboratory abnormalities, with JEMPERLI in combination with carboplatin and paclitaxel in patients with EC are decreased hemoglobin, increased creatinine, peripheral neuropathy, decreased white blood cell count, fatigue, nausea, alopecia, decreased platelets, increased glucose, decreased lymphocytes, decreased magnesium, decreased neutrophils, increased aspartate aminotransferase (AST), arthralgia, rash, constipation, diarrhea, increased alanine aminotransferase (ALT), decreased potassium, decreased albumin, decreased sodium, increased alkaline phosphatase, abdominal pain, dyspnea, decreased appetite, increased amylase, decreased phosphate, urinary tract infection, and vomiting. ( 6.1 ) • Most common adverse reactions (≥20%) with JEMPERLI as a single agent in patients with dMMR solid tumors are fatigue/asthenia, anemia, diarrhea, and nausea. Most common Grade 3 or 4 laboratory abnormalities (≥2%) are decreased lymphocytes, decreased sodium, increased alkaline phosphatase, and decreased albumin. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact GlaxoSmithKline at 1-888-825-5249 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice. The safety population described in the Warnings and Precautions for use of JEMPERLI in combination with carboplatin and paclitaxel was evaluated in 241 patients with primary advanced or recurrent EC in the randomized, double-blind, active-controlled RUBY trial. Additionally, the pooled safety population described in Warnings and Precautions reflects exposure to JEMPERLI as a single agent in 605 patients with advanced or recurrent solid tumors in the non-randomized, open-label, multicohort GARNET trial that enrolled 314 patients with EC and 291 patients with other solid tumors. JEMPERLI was administered intravenously at doses of 500 mg every 3 weeks for 4 cycles followed by 1,000 mg every 6 weeks until disease progression or unacceptable toxicity. Among the 605 patients, 32% were exposed for >1 year and 19% were exposed for >2 years. Primary Advanced or Recurrent Endometrial Cancer: JEMPERLI in Combination with Carboplatin and Paclitaxel The safety of JEMPERLI in patients with primary advanced or recurrent EC was evaluated in RUBY [see Clinical Studies (14.1)] . Patients received JEMPERLI 500 mg (n = 241) or placebo (n = 246) in combination with carboplatin and paclitaxel every 3 weeks for 6 cycles followed by JEMPERLI 1,000 mg or placebo every 6 weeks until disease progression or unacceptable toxicity. Among the 241 patients, 38.6% were exposed for >1 year and 24.1% were exposed for >2 years. Serious adverse reactions occurred in 39% of patients receiving JEMPERLI in combination with carboplatin and paclitaxel; the most common serious adverse reactions were sepsis, including urosepsis (3.7%), and pulmonary embolism (3.3%). Fatal adverse reactions occurred in 1.2% of patients receiving JEMPERLI including septic shock (0.8%) and myelosuppression (0.4%). In patients receiving JEMPERLI in combination with carboplatin and paclitaxel, JEMPERLI was permanently discontinued due to adverse reactions in 46 patients (19%). Adverse reactions that required permanent discontinuation in ≥2 patients included 3 cases (1.2%) of rash maculo-papular, and 2 cases (0.8%) each of increased alanine aminotransferase (ALT), increased aspartate aminotransferase (AST), diarrhea, pancreatitis, fatigue, pneumonitis, and arthralgia. Dosage interruptions due to an adverse reaction occurred in 37% of patients who received JEMPERLI in combination with carboplatin and paclitaxel. Adverse reactions that required dosage interruption in ≥5% of patients who received JEMPERLI in combination with carboplatin and paclitaxel were anemia, thrombocytopenia, and peripheral neuropathy. The most common adverse reactions, including laboratory abnormalities (≥20%), were decreased hemoglobin, increased creatinine, peripheral neuropathy, decreased white blood cell count, fatigue, nausea, alopecia, decreased platelets, increased glucose, decreased lymphocytes, decreased magnesium, decreased neutrophils, increased AST, arthralgia, rash, constipation, diarrhea, increased ALT, decreased potassium, decreased albumin, decreased sodium, increased alkaline phosphatase, abdominal pain, dyspnea, decreased appetite, increased amylase, decreased phosphate, urinary tract infection, and vomiting. Table 3 summarizes the adverse reactions that occurred in ≥20% of patients with primary advanced or recurrent EC receiving JEMPERLI in combination with carboplatin and paclitaxel in RUBY. Table 3. Adverse Reactions (≥20%) in Patients with Endometrial Cancer Who Received JEMPERLI with Carboplatin and Paclitaxel in RUBY Graded per National Cancer Institute Common Terminology Criteria for Adverse Events Version 4.03. a Includes neuropathy peripheral and peripheral sensory neuropathy. b Includes fatigue and asthenia. c Includes abdominal pain, abdominal pain upper, abdominal pain lower, gastrointestinal pain, abdominal discomfort, epigastric discomfort, and abdominal tenderness. d Includes rash, rash maculo-papular, palmar-plantar erythrodysesthesia syndrome, rash pustular, skin exfoliation, and vulvovaginal rash. e Includes dyspnea and dyspnea exertional. f Includes urinary tract infection, urinary tract infection bacterial, cystitis, and pyelonephritis. Adverse Reaction JEMPERLI with Carboplatin and Paclitaxel N = 241 Placebo withCarboplatin and Paclitaxel N = 246 All Grades % Grade 3 or 4 % All Grades % Grade 3 or 4 % Nervous System Disorders Peripheral neuropathy a 64 4.1 61 2.0 General Fatigue b 56 3.3 63 5 Gastrointestinal Disorders Nausea 54 2.9 46 1.6 Constipation 35 0.4 36 0 Diarrhea 32 1.7 29 0.8 Abdominal pain c 24 2.5 29 2 Vomiting 20 1.7 20 1.6 Skin and Subcutaneous Tissue Alopecia 54 0 50 1.2 Rash d 37 7 18 1.2 Musculoskeletal and Connective Tissue Arthralgia 37 1.2 35 0.4 Respiratory, Thoracic and Mediastinal Disorders Dyspnea e 23 1.7 26 0.8 Metabolism and Nutrition Disorders Decreased appetite 22 2.1 18 0.4 Infections and Infestations Urinary tract infection f 21 3.3 18 1.6 Clinically relevant adverse reactions in <20% of patients with primary advanced or recurrent EC who received JEMPERLI in combination with carboplatin and paclitaxel included: Endocrine Disorders: Hypothyroidism, hyperthyroidism, thyroiditis, adrenal insufficiency. Eye Disorders: Keratitis, uveitis. Gastrointestinal Disorders: Colitis, pancreatitis. Metabolism and Nutrition Disorders: Type 1 diabetes mellitus. Musculoskeletal and Connective Tissue Disorders: Immune-mediated arthritis. Respiratory, Thoracic, and Mediastinal Disorders: Pneumonitis. Cardiac Disorders: Myocarditis. Nervous System Disorders: Encephalopathy. Vascular Disorders: Hypertension, hemorrhage. Table 4 summarizes the laboratory abnormalities in patients with primary advanced or recurrent EC receiving JEMPERLI in combination with carboplatin and paclitaxel in RUBY. Table 4. Select Laboratory Abnormalities that Worsened from Baseline Occurring in ≥20% of Patients with Endometrial Cancer Receiving JEMPERLI with Carboplatin and Paclitaxel in RUBY ALT = alanine aminotransferase; AST = aspartate aminotransferase. a Consists of new onset of laboratory abnormality or worsening of baseline laboratory abnormality. Laboratory Test JEMPERLI with Carboplatin and Paclitaxel N = 241 Placebo with Carboplatin and Paclitaxel N = 246 All Grades a % Gra

Mechanism of Action Binding of the PD-1 ligands, PD-L1 and PD-L2, to the PD-1 receptor found on T cells inhibits T-cell proliferation and cytokine production. Upregulation of PD-1 ligands occurs in some tumors, and signaling through this pathway can contribute to inhibition of active T-cell immune surveillance of tumors. Dostarlimab-gxly is a humanized monoclonal antibody of the IgG4 isotype that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response, including the anti-tumor immune response. In syngeneic mouse tumor models, blocking PD-1 activity resulted in decreased tumor growth.