PIASKY

Crovalimab-akkz, a complement C5 inhibitor, is a humanized monoclonal antibody based on a human IgG1 framework. The recombinant antibody is produced in Chinese hamster ovary CHO cells and consists of two heavy chains (451 amino acid residues each) and two light chains (217 amino acid residues each). The approximate molecular weight is 145 kDa. PIASKY (crovalimab-akkz) injection is a preservative-free, sterile, clear to opalescent, almost colorless to brownish-yellow, solution supplied in a single-dose vial for intravenous use or subcutaneous use. Intravenous use requires dilution prior to administration. Each single-dose vial contains a 2 mL solution of crovalimab-akkz (340 mg), arginine hydrochloride (42.2 mg), histidine (9.4 mg), poloxamer 188 (1 mg), and Water for Injection USP. The pH is 5.8. Aspartic acid may be added to adjust the pH.

PIASKY is indicated for the treatment of adult and pediatric patients 13 years and older with paroxysmal nocturnal hemoglobinuria (PNH) and body weight of at least 40 kg. PIASKY is a complement C5 inhibitor indicated for the treatment of adult and pediatric patients 13 years and older with paroxysmal nocturnal hemoglobinuria (PNH) and body weight of at least 40 kg ( 1 )

See Full Prescribing Information for instructions on preparation, dosage, and administration. ( 2.2 , 2.3 , 2.4 , 2.5 ) Start with one loading dose administered by intravenous infusion, followed by 4 additional loading doses administered by subcutaneous injection. Then administer a maintenance dose every 4 weeks by subcutaneous injection. For patients switching from another complement inhibitor, the first loading dose of PIASKY should be administered no sooner than the time of the next scheduled complement inhibitor administration. See Full Prescribing Information for considerations when switching from another C5 inhibitor. Administer doses based on the patient's actual body weight ( 2.2 ) 2.1 Recommended Vaccination and Prophylaxis for Meningococcal Infection Vaccinate patients for meningococcal infection (serogroups A, C, W, Y and B) according to current ACIP recommendations at least 2 weeks prior to initiation of PIASKY [see Warnings and Precautions (5.1) ] . If urgent PIASKY therapy is indicated in a patient who is not up to date with meningococcal vaccines according to ACIP recommendations, provide the patient with antibacterial drug prophylaxis and administer these vaccines as soon as possible. Healthcare providers who prescribe PIASKY must enroll in the PIASKY REMS [see Warnings and Precautions (5.2) ]. 2.2 Recommended Dosage Regimen The recommended dosage regimen consists of one loading dose administered by intravenous (IV) infusion (on Day 1), followed by four additional weekly loading doses administered by subcutaneous (SUBQ) injection (on Days 2, 8, 15, and 22). The maintenance dose starts on Day 29 and is then administered every 4 weeks by subcutaneous injection. Administer doses based on the patient's actual body weight, as shown in Table 1 . Table 1 PIASKY Dosage Regimen Based on Body Weight Body Weight ≥ 40 kg to < 100 kg ≥ 100 kg IV = intravenous, SUBQ = subcutaneous Loading Dose Day 1 Day 2, 8, 15, 22 1,000 mg (IV) 340 mg (SUBQ) 1,500 mg (IV) 340 mg (SUBQ) Maintenance Dose Day 29 and Q4W Q4W=every 4 weeks thereafter 680 mg (SUBQ) 1,020 mg (SUBQ) The dosing schedule is allowed to occasionally vary within 2 days of the scheduled administration day (except at Day 1 and Day 2). If this occurs, the subsequent dose should be administered according to the regular schedule. Modification of the maintenance dose is required if the patient's body weight changes to become consistently greater than or lower than 100 kg during the course of therapy. 2.3 Recommended Timing for Switching to PIASKY from Another C5 Inhibitor Healthcare providers should consider the benefits of the timing of switching C5 inhibitors vs. the risks of Type III hypersensitivity reactions [see Warnings and Precautions (5.3) ] . For patients switching from another C5 inhibitor (e.g., eculizumab or ravulizumab), the first intravenous loading dose of PIASKY should be administered no sooner than the time of the next scheduled complement inhibitor administration. The administration of the additional subcutaneous loading doses and maintenance doses of PIASKY should follow as per the schedule shown in Table 1 . 2.4 Delayed or Missed Dose If an entire planned dose or part of a planned dose of PIASKY is missed, administer the missed dose or remainder of the missed dose as soon as possible before the day of the next scheduled dose. Then administer the next dose on the regularly scheduled dosing day. Do not administer two doses or more than the prescribed dose on the same day to make up for a missed dose. 2.5 Preparation and Administration Each vial of PIASKY is for one-time use in only one patient. PIASKY is administered as an intravenous infusion (first dose) and as a subcutaneous injection (subsequent doses). Only healthcare providers should administer PIASKY. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. PIASKY is clear to opalescent, and an almost colorless to brownish-yellow solution. PIASKY should be discarded if the medicine looks cloudy, discolored, or has particles in it. Preparation of Intravenous Infusion Use aseptic technique to prepare PIASKY for intravenous administration. PIASKY must be diluted and administered as an intravenous infusion over 60 minutes ± 10 minutes (1,000 mg) or 90 minutes ± 10 minutes (1,500 mg). PIASKY solution must be diluted in 0.9% Sodium Chloride Injection prior to administration. A 0.2 micron in-line filter must be used with the infusion set during administration. A dedicated infusion line must be used during intravenous administration. Only dilute PIASKY in 0.9% Sodium Chloride Injection. Dilution of Intravenous Infusion Withdraw the required volume of PIASKY from the vial (see Table 2 ) using a sterile syringe and dilute into the infusion bag. Use multiple vials to meet the required volume of PIASKY to be added to the infusion bag. Discard any unused portion left in the vial. Dilution of PIASKY in infusion bags containing 0.9% Sodium Chloride Injection must be in the range of 4-15 mg/mL (final concentration after dilution) (see Table 2 ). Intravenous infusion bags of a volume of 100 mL or 250 mL can be used. Table 2 Dose Example Volume Determination Dose (mg) Volume of Piasky (mL) Size of 0.9% Sodium Chloride Injection Bag (mL) Concentration in Bag (mg/mL) 1,000 5.9 250 4 1,500 8.8 250 6 1,000 5.9 100 10 1,500 8.8 100 15 Gently mix the infusion bag by slowly inverting the bag. Do not shake. Inspect the infusion bag for particles and discard if present. Flushing of infusion line is required to ensure complete administration of the entire dose. Storage of Diluted Solution for Infusion The diluted solution for intravenous infusion should be used immediately because PIASKY does not contain any antimicrobial preservative. If immediate use is not possible, see Table 3 for detailed storage conditions of the prepared solution for infusion, which depends on the type of infusion bags used. Table 3 Storage Conditions for the Prepared Solution for Infusion Infusion bags Storage conditions polyolefins (PO), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) PO/PE/PP Refrigerate at 2°C to 8°C (36°F to 46°F) for up to 64 hours protected from light, and store at room temperature up to 30°C (86°F) for up to 6 hours including infusion time under ambient light conditions. Protect from direct sunlight. PVC Refrigerate at 2°C to 8°C (36°F to 46°F) for up to 12 hours protected from light, and store at room temperature up to 30°C (86°F) for up to 6 hours including infusion time under ambient light conditions. Protect from direct sunlight. No incompatibilities have been observed between PIASKY and intravenous infusion bags with product-contacting materials made of polyvinyl chloride, or polyolefins such as polyethylene and polypropylene. In addition, no incompatibilities have been observed with infusion sets or infusion aids with product-contacting materials made of polyvinyl chloride, polyethylene, polyurethane, polybutadiene, acrylonitrile butadiene styrene, polycarbonate, or polytetrafluorethylene. The infusion of PIASKY may be slowed or interrupted if the patient develops an infusion-related reaction. The infusion should be discontinued immediately if the patient experiences a serious hypersensitivity reaction [see Warnings and Precautions (5.5) ] . Preparation of the Subcutaneous Injection For subcutaneous injection, PIASKY must be used undiluted. Remove the vial cap and clean the vial rubber stopper. Attach the transfer needle on the syringe. Withdraw all the medicine from the vial. Remove air bubbles if any. Remove the transfer needle from the vial. Recap the transfer needle using a one-handed scoop technique. Detach the transfer needle. Attach the injection needle on the syringe. Clean the injection site with an alcohol pad and let air dry. Inject the medicine subcutaneously. If the dose requires multiple injections, perform a new injection using a new PIASKY vial. A syringe, a transfer needle and an injection needle are needed to withdraw PIASKY solution from the vial and inject it subcutaneously. A 2 mL or 3 mL syringe fulfilling the following criteria are recommended: Transparent polypropylene or polycarbonate syringe with Luer-Lock tip (if not available, a syringe with Luer Slip tip can be used), sterile, single-use, latex-free and non-pyrogenic, and commercially available in the US. A transfer needle without a filter fulfilling the following criteria may be used: Stainless steel, sterile, preferably gauge 18 G with single bevel at approximately 45 degrees to reduce risk of needle stick injury (or gauge 21 G standard needle as an alternative), single-use, latex-free and non-pyrogenic, and commercially available in the US. An injection needle fulfilling the following criteria may be used: Hypodermic needle, stainless steel, sterile, gauge 25 G, 26 G or 27 G, length 3/8'' to 1/2'', single-use, latex-free and non-pyrogenic, preferably including safety needle shield, and commercially available in the US. Each injection is a volume of 2 mL PIASKY, corresponding to 340 mg. A 2 mL-size or 3 mL-size syringe should be used for each injection. A dose of 680 mg is achieved by performing two consecutive subcutaneous injections of 340 mg. A dose of 1020 mg is achieved by performing three consecutive subcutaneous injections of 340 mg. Inject PIASKY subcutaneously in the abdomen region and rotate abdominal injection sites with every injection. Consecutive injections must be at least 2 inches apart. No data are available on injection at other sites of the body. Injections should never be given into moles, scars, or areas where the skin is tender, bruised, red, hard, or not intact. Storage of Solution for Injection Once transferred from the vial to the syringe, PIASKY should be injected immediately because PIASKY does not contain any antimicrobial-preservative. If immediate use is not possible, the capped syringe can be refrigerated at 2°C to 8°C (36°F to 46°F) for up to 64 hours protected from light and stored at room temperature up to 30°C (86°F) for up to 5 hours under ambient light conditions. Protect from direct sunlight.

PIASKY is contraindicated: For initiation in patients with an unresolved serious Neisseria meningitidis infection [see Warnings and Precautions (5.1) ]. In patients with a known serious hypersensitivity reaction to crovalimab or any of the excipients [see Warnings and Precautions (5.5) ] . Initiation during unresolved serious Neisseria meningitidis infection ( 4 ) Serious hypersensitivity to crovalimab or any of the excipients ( 4 )

The following clinically significant adverse reactions are discussed in greater detail in other sections of the label: Serious Meningococcal Infection [see Warnings and Precautions (5.1) ] Type III Hypersensitivity Reactions Related to Drug-Target-Drug Complexes [see Warnings and Precautions (5.3) ] Other Infections [see Warnings and Precautions (5.4) ] Infusion- and Injection-Related Reactions [see Warnings and Precautions (5.5) ] The most common adverse drug reactions (incidence ≥10%) were infusion-related reaction, respiratory tract infection, viral infection, and Type III hypersensitivity reactions. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Genentech at 1-888-835-2555 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial 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. Patients Who are Complement Inhibitor-Naïve The data described below reflect exposure of 204 patients with PNH who were complement inhibitor-naïve and who were randomized in COMMODORE 2 to receive PIASKY (n = 135) or eculizumab (n = 69) at the recommended dosing regimen for 24 weeks [see Clinical Studies (14) ] . Serious adverse reactions occurred in 6% of patients receiving PIASKY in the COMMODORE 2 study, including epistaxis and pneumonia, which occurred in 2 patients each, and infusion related reaction, pyelonephritis, COVID-19, and hypovolemic shock which were reported in 1 patient each. Table 4 lists adverse reactions that occurred at a rate of 5% or more among patients randomized to PIASKY treatment for 24 weeks in the COMMODORE 2 study. The most common adverse reactions (≥10%) in patients treated with PIASKY were infusion related reaction, respiratory tract infection, and viral infection. Table 4 Adverse Reactions Reported In 5% or More of Complement-Inhibitor Naïve Patients with PNH Randomized to PIASKY in COMMODORE 2 Adverse reactions PIASKY (N = 135) % ECULIZUMAB (N = 69) % Infusion-related reaction 16 13 Respiratory tract infection Grouped terms. Diarrhea includes diarrhea and diarrhea infectious. Headache includes headache and migraine. Injection-related reaction includes injection related reaction and injection site reaction. Respiratory tract infection includes nasopharyngitis, pharyngitis, rhinitis, rhinitis allergic, upper respiratory tract infection and pneumonia. Viral infection includes viral infection, COVID-19, influenza, herpes virus infection and oral herpes. 13 20 Viral infection 11 7 Hyperuricemia 8 9 Headache 8 6 Diarrhea 7 1 Injection-related reaction Injection-related reactions are only expected to occur in the PIASKY arm as eculizumab is not given by subcutaneous injection 6 0 Patients Previously Treated with a Complement C5 Inhibitor The data described below reflect exposure of 86 patients with PNH who received PIASKY (n=44) or eculizumab (n=42) at the recommended dosing regimen for 24 weeks in COMMODORE 1, an open-label, active-controlled, multicenter study conducted in patients switching from eculizumab. The median age was 47 years (range: 21 to 85); 52% were female, and race included White (73%), Asian (19%), unknown (5%), and Black/African-American (3%). The population ethnicities were 17% Hispanic or Latino and 76% not Hispanic or Latino. Serious adverse reactions in COMMODORE 1 were reported in 3 patients (7%) with PNH receiving PIASKY. Serious adverse reactions included pneumonia, nasopharyngitis, and urinary tract infection, which occurred in 1 patient each. Table 5 lists adverse reactions that occurred at a rate of 5% or more among patients randomized to PIASKY treatment for 24 weeks in the COMMODORE 1 study. The most common adverse reactions (≥10%) in patients treated with PIASKY were viral infections, respiratory tract infection, Type III hypersensitivity reaction, infusion-related reaction, peripheral edema, and headache. Table 5 Adverse Reactions Reported In 5% or More of Complement-Inhibitor Treated Patients with PNH Randomized to PIASKY in COMMODORE 1 Adverse reactions PIASKY (N = 44) % ECULIZUMAB (N = 42) % Viral infection Grouped terms Fatigue includes fatigue, malaise and asthenia. Injection-related reaction includes injection related reaction and injection site reaction. Rash includes rash and skin exfoliation. Peripheral edema includes edema peripheral and peripheral swelling. Respiratory tract infection includes respiratory tract infection, nasopharyngitis, pneumonia and upper respiratory tract infection. Viral infection includes viral infection, influenza, COVID-19, and respiratory syncytial virus infection 23 21 Respiratory tract infection 18 5 Type III hypersensitivity reaction Type III immune complex mediated reaction is only expected to occur in the PIASKY arm as patients in the eculizumab arm did not change C5 inhibitor treatment 16 0 Infusion-related reaction Infusion-related reactions are not expected to occur in the eculizumab arm as these patients tolerated eculizumab prior to study initiation 14 0 Peripheral edema 11 2 Headache 11 2 Injection-related reaction Injection-related reactions are only expected to occur in the PIASKY arm as eculizumab is not given by subcutaneous injection 9 0 Fatigue 9 12 Rash 9 0 Diarrhea 7 2 Nausea 7 5 Arthralgia 7 0 Type III Hypersensitivity Reactions Related to Drug-Target-Drug Complexes [see Warnings and Precautions (5.3) , and Drug Interactions (7) ] . Across the COMMODORE 1 and 2 studies, 39 out of 201 (19.4%) patients who switched from eculizumab or ravulizumab to PIASKY experienced a Type III hypersensitivity reaction (reported as Type III immune complex mediated reaction). A total of 6 patients had switched two times and of the 6 patients, 2 patients experienced a second episode of Type III hypersensitivity reaction after discontinuing PIASKY and switching to ravulizumab. One of these patients developed Grade 3 axonal neuropathy and a Type III hypersensitivity reaction could not be excluded and the other developed Grade 2 arthralgia and myalgia. These two events remained unresolved at the last follow up visit of the clinical studies (the duration of the events until last follow-up was 313 days for the event of Grade 3 axonal neuropathy and 142 days for the event of Grade 2 arthralgia and myalgia, respectively). Two additional patients who experienced Grade 3 rash and Grade 3 arthralgia, respectively, had unresolved Type III hypersensitivity reaction at the last follow-up visit. The median time to onset of Type III hypersensitivity reaction in patients who switched treatment from eculizumab or ravulizumab to PIASKY was 1.6 weeks (range: 0.7 – 4.4 weeks) and the median duration of Type III hypersensitivity reactions was 1.9 weeks (range 0.4 – 34.1 weeks). The majority of events were Grade 1-2. Grade 3 Type III hypersensitivity reaction occurred in 8% of patients who switched from eculizumab or ravulizumab to PIASKY. Out of 42 Type III hypersensitivity reactions, 37 (88%) resolved, including 1 (2.4%) that resolved with PIASKY discontinuation, 2 (4.8%) that resolved with PIASKY interruption and 34 (81%) that resolved without discontinuation, interruption, or dose change in PIASKY therapy. Axonal Neuropathy In COMMODORE 1 and 2, Grade 3 distal axonal demyelinating polyneuropathy and Grade 3 axonal neuropathy were reported, each in 1 patient who switched from another C5 inhibitor to PIASKY or from PIASKY to another C5 inhibitor. The Grade 3 distal axonal demyelinating polyneuropathy occurred 11 weeks after a patient switched from eculizumab to PIASKY (with first dose of PIASKY received 12 days after the last dose of eculizumab treatment) and was preceded by a bacterial respiratory tract infection. The Grade 3 axonal neuropathy occurred in a patient who had switched to ravulizumab treatment after 6 weeks of treatment with PIASKY, and previously received ravulizumab treatment prior to switching to treatment with PIASKY [see Warnings and Precautions (5.3) ] . Events associated with the axonal neuropathy included COVID-19, sepsis and administration of a fluoroquinolone. In both cases of axonal neuropathy, a Type III hypersensitivity reaction as a cause of, or contributor to, the axonal neuropathy could not be excluded. Both cases of axonal neuropathy remained unresolved at the last follow up visit of the clinical studies. Pediatric Population with PNH Treated with PIASKY Twelve pediatric patients with PNH (9 treatment-naïve patients and 3 patients who switched from another C5 inhibitor) were treated with PIASKY in COMMODORE 1 (n=2), COMMODORE 2 (n=7), and in a single-arm trial [(COMMODORE 3 (n=3)]. The safety profile of PIASKY appeared comparable between adult and pediatric patients, but conclusions are limited by the small number of pediatric patients.

PIASKY binds different epitopes on C5 compared to eculizumab and ravulizumab, which can lead to the formation of DTDCs when patients switch between PIASKY and either eculizumab or ravulizumab. These DTDCs comprise one or more units of C5 bound to both PIASKY and to eculizumab or ravulizumab. These DTDCs are expected to be cleared within approximately 8 weeks (in the case of eculizumab) or longer (in the case of ravulizumab) and can result in Type III hypersensitivity reactions [see Warnings and Precautions (5.3) , Adverse Reactions (6.1) and Clinical Pharmacology (12.3) ] .

16.2 Storage and Handling Store refrigerated at 2°C to 8°C (36°F to 46°F) in the outer carton to protect from light. Do not freeze. Do not shake. Once removed from the refrigerator, the unopened vial can be kept at room temperature up to 30°C (86°F) in its outer carton for no longer than 7 days. Prior to administration, unopened vials of PIASKY may be stored out of the refrigerator at room temperature if needed and then returned to refrigeration. The total combined time out of refrigeration should not exceed 7 days and the temperature should not exceed 30°C (86°F). Discard if stored out of the refrigerator at room temperature for longer than 7 days.