ข้อมูลนี้มีวัตถุประสงค์เพื่อการศึกษาเท่านั้น ควรปรึกษาผู้เชี่ยวชาญด้านสุขภาพเสมอ เรียนรู้เพิ่มเติม

Somatrogon-Ghla

Prescription

ชื่อทางการค้า: Ngenla

รูปแบบยา
Injection
เส้นทางการให้ยา
SUBCUTANEOUS
ผู้ผลิต
Pfizer Laboratories Div Pfizer Inc

About This Medication

11 DESCRIPTION Somatrogon-ghla, a human growth hormone analog, is a fusion protein produced in Chinese Hamster Ovary (CHO) cells by recombinant DNA technology. It is comprised of the amino acid sequence of human growth hormone (hGH) with one copy of the C-terminal peptide (CTP) from the beta chain of human chorionic gonadotropin (hCG) at the N-terminus and 2 copies of CTP (in tandem) at the C-terminus. Somatrogon-ghla has an approximate molecular weight of 40 KDa. NGENLA (somatrogon-ghla) injection is a sterile, clear and colorless to slightly light yellow solution for subcutaneous use supplied in a 24 mg/1.2 mL (20 mg/mL) or 60 mg/1.2 mL (50 mg/mL) single-patient-use prefilled pen. Each 1.2 mL of solution contains either 24 mg or 60 mg of somatrogon-ghla, and the inactive ingredients citric acid monohydrate (0.3 mg), histidine (1.9 mg), metacresol (4 mg, as a preservative), poloxamer 188 (2 mg), sodium chloride (10 mg) and sodium citrate (2.8 mg) in water for injection. NGENLA has a pH of approximately 6.6.

ส่วนประกอบออกฤทธิ์

ส่วนประกอบ ความแรง
Somatrogon -

ข้อบ่งใช้และการใช้งาน

1 INDICATIONS AND USAGE NGENLA is indicated for the treatment of pediatric patients aged 3 years and older who have growth failure due to an inadequate secretion of endogenous growth hormone. NGENLA is a human growth hormone analog indicated for treatment of pediatric patients aged 3 years and older who have growth failure due to inadequate secretion of endogenous growth hormone ( 1 ).

กลไกการทำงาน

12.1 Mechanism of Action Somatrogon-ghla binds to the GH receptor and initiates a signal transduction cascade culminating in changes in growth and metabolism. Somatrogon-ghla binding leads to activation of the STAT5b signaling pathway and increases the serum concentration of Insulin-like Growth Factor (IGF-1). GH and IGF-1 stimulate metabolic changes, linear growth, and enhance growth velocity in pediatric patients with GHD.

ขนาดยาและวิธีการให้ยา

2 DOSAGE AND ADMINISTRATION • NGENLA treatment should be supervised by a healthcare provider who is experienced in the diagnosis and management of pediatric patients with growth hormone deficiency ( 2.1 ). • Administer NGENLA by subcutaneous injection once weekly, on the same day each week, at any time of the day in the abdomen, thighs, buttocks, or upper arms with weekly rotation of injection site ( 2.1 ). • The recommended dosage is 0.66 mg/kg based on actual body weight administered once weekly ( 2.3 ). • Individualize dosage for each patient based on the growth response ( 2.3 ). • Patients switching from daily growth hormone may initiate treatment with once-weekly NGENLA on the day following their last daily injection ( 2.3 ). • If more than one injection is required to deliver a complete dose, each injection should be administered at a different injection site ( 2.3 ). 2.1 Important Dosing and Administration Information • NGENLA treatment should be supervised by a healthcare provider who is experienced in the diagnosis and management of pediatric patients aged 3 years and older with growth failure due to growth hormone deficiency (GHD) [see Indications and Usage (1) ] . • Refer patient to the Instructions for Use for complete administration instructions. • Administer NGENLA by subcutaneous injection, once weekly, on the same day each week, at any time of the day in the abdomen, thighs, buttocks, or upper arms. Rotate the injection site weekly. • Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. If flakes, particles or discoloration are observed, do not use the pen. Do not shake; shaking can damage the product. • Prefilled pens deliver somatrogon-ghla in 0.2 mg or 0.5 mg increments. 2.2 Perform Fundoscopic Examination Prior to Initiation of NGENLA • Perform fundoscopic examination before initiating treatment with NGENLA to exclude preexisting papilledema. If papilledema is identified, evaluate the etiology and treat the underlying cause before initiating treatment with NGENLA [see Warnings and Precautions (5.4) ] . 2.3 Recommended Dosage and Monitoring for Pediatric Patients with GHD • Recommended dosage of NGENLA is 0.66 mg/kg based on actual body weight administered once weekly by subcutaneous (SC) injection. • Individualize dosage for each patient based on the growth response. • The day of weekly administration can be changed if necessary as long as the time between 2 doses is at least 3 days. After selecting a new dosing day, the once weekly dosing should be continued. • When switching from daily growth hormone, the once-weekly NGENLA may be initiated on the day following their last daily injection. • If more than one injection is required to deliver a complete dose, each injection should be administered at a different injection site. 2.4 Missed Dose • If a dose is missed, administer NGENLA as soon as possible within 3 days after the missed dose. • If more than 3 days have passed, skip the missed dose and administer the next dose on the regularly scheduled day.

Side Effects Overview

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: • Increased mortality in patients with acute critical illness [see Warnings and Precautions (5.1) ] • Severe hypersensitivity [see Warnings and Precautions (5.2) ] • Increased risk of neoplasm [see Warnings and Precautions (5.3) ] • Glucose intolerance and diabetes mellitus [see Warnings and Precautions (5.4) ] • Intracranial hypertension [see Warnings and Precautions (5.5) ] • Fluid retention [see Warnings and Precautions (5.6) ] • Hypoadrenalism [see Warnings and Precautions (5.7) ] • Hypothyroidism [see Warnings and Precautions (5.8) ] • Slipped capital femoral epiphysis [see Warnings and Precautions (5.9) ] • Progression of preexisting scoliosis [see Warnings and Precautions (5.10) ] • Pancreatitis [see Warnings and Precautions (5.11) ] • Lipoatrophy [see Warnings and Precautions (5.12) ] • Sudden death in pediatric patients with Prader-Willi syndrome [ see Warnings and Precautions (5.13) ] Adverse reactions reported in ≥5% of patients treated with NGENLA are: injection site reactions, nasopharyngitis, headache, pyrexia, anemia, cough, vomiting, hypothyroidism, abdominal pain, rash, and oropharyngeal pain ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Pfizer Inc. at 1-800-438-1985 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 to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Safety data are derived from a safety and efficacy study in pediatric patients with GHD [see Clinical Studies (14.1) ]. The data from the 12-month main study period reflect exposure of 109 patients to NGENLA administered once weekly (0.66 mg/kg/wk) and 115 patients to somatropin administered once daily (0.034 mg/kg/day). The mean age across the treatment groups, was 7.7 years (min 3.01, max 11.96); 40.2% of patients were >3 years to ≤7 years, 59.8% were >7 years, 71.9% of patients were male, and 28.1% were female. In this study, 74.6% of patients were White, 20.1% were Asian, 0.9% were Black or African American, 0.5% were American Indian or Alaska Native, 0.5% were Native Hawaiian or Other Pacific Islander, and for 3.6% race information was missing; 10.7% of patients identified as Hispanic or Latino. Baseline disease characteristics were balanced across treatment groups. Table 1 shows the adverse reactions that occurred in ≥5% of patients treated with NGENLA or daily somatropin during the 12-month main study period. Reporting of injection site reactions was solicited through the use of a patient diary after each weekly injection for patients administered NGENLA and once weekly for patients administered daily injections of somatropin. Table 1 Adverse Reactions Occurring in ≥5% of NGENLA- or Somatropin-Treated Pediatric Patients (52 Weeks of Treatment) Adverse reactions that are medically related were grouped to a single preferred term. Adverse Drug Reactions Daily Somatropin (N=115) n (%) NGENLA (N=109) n (%) Injection site reactions Injection site reactions included: injection site pain (39% somatrogon-ghla vs 25% daily somatropin), injection site swelling/induration/hypertrophy/inflammation (10% somatrogon-ghla vs 1% daily somatropin), injection site erythema (8% somatrogon-ghla vs none daily somatropin), injection site pruritus (5% somatrogon-ghla vs none daily somatropin), injection site hemorrhage (5% somatrogon-ghla vs none daily somatropin). 29 (25.2) 46 (42.2) Nasopharyngitis Nasopharyngitis included: rhinitis, pharyngitis, rhinitis allergic, pharyngitis streptococcal, viral pharyngitis, nasopharyngitis. 33 (28.7) 36 (33) Headache 25 (21.7) 18 (16.5) Pyrexia 17 (14.8) 18 (16.5) Anemia 10 (8.7) 10 (9.2) Cough 9 (7.8) 9 (8.3) Vomiting 9 (7.8) 8 (7.3) Hypothyroidism 3 (2.6) 7 (6.4) Abdominal pain 8 (7.0) 7 (6.4) Rash 7 (6.1) 6 (5.5) Oropharyngeal pain 4 (3.5) 6 (5.5) Arthralgia 8 (7.0) 5 (4.6) Otitis media 10 (8.7) 5 (4.6) Tonsillitis 6 (5.2) 5 (4.6) Bronchitis 9 (7.8) 3 (2.8) Laboratory Tests More NGENLA-treated patients shifted from normal eosinophil levels at baseline to elevated eosinophil levels at the end of the 12-month study compared to the daily somatropin group (29% vs 12%). 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of somatropin. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Musculoskeletal and connective tissue disorders – osteonecrosis in pediatric patients

คำเตือนและข้อควรระวัง

ข้อห้ามใช้

เภสัชจลนศาสตร์

12.3 Pharmacokinetics Somatrogon-ghla pharmacokinetics (PK) was assessed using a population PK approach for NGENLA in 151 pediatric patients (aged 3 to 15.5 years) with GHD. Absorption Following subcutaneous injection, serum concentrations increased slowly, peaking 6 to 25 hours with a median of 11 hours after dosing. In pediatric patients with GHD, somatrogon-ghla exposure increases in a dose-proportional manner for doses of 0.25 mg/kg/wk, 0.48 mg/kg/wk, and 0.66 mg/kg/wk. There is no accumulation of somatrogon-ghla after once weekly administration. In pediatric patients with GHD, the mean population PK estimated steady-state peak concentrations (mean ± SD) following 0.66 mg/kg/wk was 495 ± 90 ng/mL. Distribution In pediatric patients with GHD, the mean population PK estimated apparent central volume of distribution was 0.342 L/kg and apparent peripheral volume of distribution was 0.671 L/kg. Elimination In pediatric patients with GHD, the mean population PK estimated apparent clearance was 0.0398 L/h/kg. The mean population PK estimated effective half-life was 37.7 hours, which allows for weekly dosing. Somatrogon-ghla will be present in the circulation for about 8 days after the last dose. Metabolism The metabolism of somatrogon-ghla is believed to be classical protein catabolism, with subsequent recovery of the amino acids and return to the systemic circulation. Excretion Excretion was not evaluated in clinical studies. Specific Populations Based on population PK analyses, age, sex, race, and ethnicity do not have a clinically meaningful effect on the pharmacokinetics of somatrogon-ghla in pediatric patients with GHD. The exposure of somatrogon-ghla decreases with an increase in body weight. However, the somatrogon-ghla dosing regimen of 0.66 mg/kg/wk provides adequate systemic exposure over the body weight range of 10 to 54 kg evaluated in the clinical studies. Renal or Hepatic Impairment NGENLA has not been studied in patients with hepatic or renal impairment.

Frequently Asked Questions

1 INDICATIONS AND USAGE NGENLA is indicated for the treatment of pediatric patients aged 3 years and older who have growth failure due to an inadequate secretion of endogenous growth hormone. NGENLA is a human growth hormone analog indicated for treatment of pediatric patients aged 3 years and older who have growth failure due to inadequate secretion of endogenous growth hormone ( 1 ).

2 DOSAGE AND ADMINISTRATION • NGENLA treatment should be supervised by a healthcare provider who is experienced in the diagnosis and management of pediatric patients with growth hormone deficiency ( 2.1 ). • Administer NGENLA by subcutaneous injection once weekly, on the same day each week, at any time of the day in the abdomen, thighs, buttocks, or upper arms with weekly rotation of injection site ( 2.1 ). • The recommended dosage is 0.66 mg/kg based on actual body …

5 WARNINGS AND PRECAUTIONS • Severe Hypersensitivity : Severe hypersensitivity reactions may occur. In the event of an allergic reaction, seek prompt medical attention ( 5.2 ). • Increased Risk of Neoplasms : Monitor patients with preexisting tumors for progression or recurrence. Increased risk of a second neoplasm in childhood cancer survivors treated with somatropin – in particular meningiomas in patients treated with radiation to the head for their first neoplasm ( 5.3 ). • Glucose Intolerance and Diabetes Mellitus …

4 CONTRAINDICATIONS • Acute critical illness after open heart surgery, abdominal surgery or multiple accidental trauma, or those with acute respiratory failure due to the risk of increased mortality with somatropin [see Warnings and Precautions (5.1) ] . • Hypersensitivity to somatrogon-ghla or any of the excipients in NGENLA [see Warnings and Precautions (5.2) ] . • Closed epiphyses. • Active malignancy due to the risk of malignancy progression [see Warnings and Precautions (5.3) ] . • Active proliferative or …

Somatrogon-Ghla is a prescription medication. You will need a valid prescription from a licensed healthcare provider.

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References & Data Sources

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This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.