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Fabhalta (iptacopan) Prior Authorization with Quantity Limit Program Summary

Policy Number: PH-1218

This program applies to Blue Partner, Commercial, GenPlus, NetResults A series, SourceRx and Health Insurance Marketplace formularies. 

POLICY REVIEW CYCLE

Effective Date

Date of Origin   

07-01-2024           

07-01-2024

FDA LABELED INDICATIONS AND DOSAGE

Agent(s)

FDA Indication(s)

Notes

Ref#

Fabhalta®

(iptacopan)

Capsule

Treatment of adults with paroxysmal nocturnal hemoglobinuria (PNH)

1

See package insert for FDA prescribing information:  https://dailymed.nlm.nih.gov/dailymed/index.cfm

CLINICAL RATIONALE

Paroxysmal Nocturnal Hemoglobinuria

Paroxysmal nocturnal hemoglobinuria (PNH) is a chronic, progressive, life-threatening, rare, multi-systemic disease developing as a result of somatic mutation of hematopoietic stem cells, and characterized by clonal, complement-mediated intravascular hemolysis. PNH is mainly a disease of adults with a median age of onset in the thirties. High Precision Flow Cytometry is the most useful and accepted diagnostic test to confirm the diagnosis of PNH. Flow cytometry is performed by incubating the patient’s peripheral blood cells with fluorescently-labeled monoclonal antibodies that bind to glycosylphosphatidylinositol (GPI) anchored proteins, which are reduced or absent on blood cells in PNH. Since different blood cell lineages display different combinations of GPI-linked proteins, and some proteins bind to cell surfaces via both GPI-linked and GPI-independent mechanisms, it is recommended that at least two independent flow cytometry reagents be used on at least two cell lineages (e.g., RBCs and WBCs) to establish the diagnosis of PNH.(2)

Lack of the complement inhibitor CD59 on the red blood cells surface is mostly responsible for the clinical manifestations in PNH. These patients manifest with chronic intravascular hemolysis, paroxysmal flares of hemolysis and a propensity for thrombosis. Intravascular hemolysis leads to release of free hemoglobin (Hb) into the blood. Free hemoglobin, in turn, can cause various toxic effects, including hypercoagulability, changes in vascular tone from reduction of circulating nitric oxide and renal damage.(3)

Extravascular hemolysis also occurs in patients with PNH because C3 fragments that are not destroyed by the membrane attack complex (MAC) intravascularly can accumulate on the GPI-negative red blood cell (lacking CD55) surface and these fragments opsonize the red blood cells, causing reticuloendothelial destruction in the liver and spleen.(3)

The main clinical situations or diseases that should be considered in the differential diagnosis of PNH are:(3)

  • Coombs-negative hemolytic anemia (e.g., hemoglobinopathies, hereditary spherocytosis), microangiopathic hemolytic anemias, drug- or toxin-induced hemolysis/anemias, disseminated intravascular coagulation, and autoimmune hemolysis
  • Venous thrombosis in atypical sites, including myeloproliferative disorders; solid tumors associated with hypercoagulability; extrinsic compression of vessels, and; inherited/acquired thrombophilias
  • Anemia and/or other cytopenias related to bone marrow failure syndrome (e.g., aplastic anemia, MDS)

PNH is classified into three different categories:(3)

  • Classic PNH (PNH with clinical and laboratory findings of intravascular hemolysis without any evidence of bone marrow deficiency)
  • PNH in the setting of another specified bone marrow disorder (evidence of hemolysis, as well as another specified bone marrow disorder [e.g., aplastic anemia, MDS])
  • Subclinical PNH (patients with a small population of PNH cells and no clinical or laboratory evidence of hemolysis or thrombosis)

Patients with PNH have a median survival of ten years after diagnosis. The approach to therapy depends on the severity of symptoms and the degree of hemolysis. The treatment options for PNH are supportive care, allogenic hematopoietic stem cell transplantation (HCT) and a complement blockade.(2,3)

Efficacy

Iptacopan binds to Factor B of the alternative complement pathway and regulates the cleavage of C3, generation of downstream effectors, and the amplification of the terminal pathway. In PNH, intravascular hemolysis is mediated by the downstream membrane attack complex, while extravascular hemolysis is facilitated by C3b opsonization. Iptacopan acts proximally in the alternative pathway of the complement cascade to control both C3b-mediated EVH and terminal complement mediated IVH.(1)

The efficacy of Fabhalta in adults with PNH was evaluated in a multi-center, open-label, 24-week active comparator-controlled trial (APPLY-PNH; NCT04558918). The study enrolled adults with PNH and residual anemia (hemoglobin < 10 g/dL) despite previous treatment with a stable regimen of anti-C5 treatment (either eculizumab or ravulizumab) for at least 6 months prior to randomization. Efficacy primary endpoints were established based on demonstration of superiority of switching to Fabhalta compared to continuing on anti-C5 therapy in achieving hematological response after 24 weeks of treatment, without a need for transfusion, by assessing the proportion of patients demonstrating:(1)

  • Sustained increase of greater than or equal to 2 g/dL in hemoglobin levels from baseline (hemoglobin improvement) 
  • Sustained hemoglobin levels greater than or equal to 12 g/dL

Secondary endpoints included:(1)

  • Transfusion avoidance
  • Change from baseline in hemoglobin levels
  • Change from baseline in absolute reticulocyte counts

Patients with sustained increase of hemoglobin levels greater than or equal to 2 g/dL in the Fabhalta arm had an 82.3% response rate (95% CI) and the response rate in the Anti-C5 arm was 0%. Patients with sustained hemoglobin level greater than or equal to 12 g/dL in the absence of tranfusions in the Fabhalta arm had a 67.7% response rate (95% CI) and the response rate in the Anti-C5 arm was 0%.(1)  

Fabhalta was studied in a single arm study in adults with PNH who were not previously treated with a complement inhibitor (APPOINT-PNH; NCT04820530). Adult patients with PNH (RBC clone size greater than or equal to 10%), hemoglobin less than 10 g/dL, and LDH greater than 1.5 times the upper limit of normal received Fabhalta during the 24-week open-label core treatment period. In total, 77.5% (95% CI: 61.5%, 89.2%) of patients achieved a sustained increase (between Day 126 and Day 168) in hemoglobin levels from baseline of greater than or equal to 2 g/dL in the absence of RBC transfusions.(1) 

Safety

Fabhalta has a boxed warning about the increased risk of serious and life-threatening infections, caused by encapsulated bacteria, including Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae type B:(1)

  • Complete or update vaccination for encapsulated bacteria at least 2 weeks prior to the first dose of Fabhalta, unless the risks of delaying Fabhalta outweigh the risk of developing a serious infection.
  • Patients receiving Fabhalta are at increased risk for invasive disease caused by encapsulated bacteria, even if they develop antibodies following vaccination.

Fabhalta is contraindicated in:(1)

  • Serious hypersensitivity to iptacopan or any of the excipients
  • Initiation in patients with unresolved serious infection caused by encapsulated bacteria

Fabhalta is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called FABHALTA REMS.(1)

REFERENCES

Number

Reference

1

Fabhalta prescribing information. Novartis Pharmaceuticals Corporation. December 2023.

2

Sahin Fahri, Meltem Akay O, Ayer M, et al. Pesg PNH diagnosis, follow-up and treatment guidelines. Am J Blood Res. 2016; 6(2): 19-27.

3

Rodolfo D. Cançado, Aderson da Silva Araújo, Alex Freire Sandes, Celso Arrais, Clarisse Lopes de Castro Lobo, Maria Stella Figueiredo, Sandra Fátima Menosi Gualandro, Sara Teresinha Olalla Saad, Fernando Ferreira Costa. Consensus statement for diagnosis and treatment of paroxysmal nocturnal haemoglobinuria. Hematology, Transfusion and Cell Therap. 2020.

POLICY AGENT SUMMARY PRIOR AUTHORIZATION

Target Brand Agent(s)

Target Generic Agent(s)

Strength

Targeted MSC

Available MSC

Final Age Limit

Preferred Status

Fabhalta

iptacopan hcl cap

200 MG

M ; N ; O ; Y

N

POLICY AGENT SUMMARY QUANTITY LIMIT

Target Brand Agent Name(s)

Target Generic Agent Name(s)

Strength

QL Amount

Dose Form

Day Supply

Duration

Addtl QL Info

Allowed Exceptions

Targeted NDCs When Exclusions Exist

Fabhalta

iptacopan 200 mg capsules

200 MG

60

Capsules

30

DAYS

CLIENT SUMMARY – PRIOR AUTHORIZATION

Target Brand Agent Name(s)

Target Generic Agent Name(s)

Strength

Client Formulary

Fabhalta

iptacopan hcl cap

200 MG

Blue Partner ; Commercial ; GenPlus ; Health Insurance Marketplace ; NetResults A Series ; SourceRx

CLIENT SUMMARY – QUANTITY LIMITS

Target Brand Agent Name(s)

Target Generic Agent Name(s)

Strength

Client Formulary

Fabhalta

iptacopan 200 mg capsules

200 MG

Blue Partner ; Commercial ; GenPlus ; Health Insurance Marketplace ; NetResults A Series ; SourceRx

PRIOR AUTHORIZATION CLINICAL CRITERIA FOR APPROVAL

Module

Clinical Criteria for Approval

Initial Evaluation

Target Agent(s) will be approved when ALL of the following are met:

  1. ONE of the following:
    1. The patient has a diagnosis of Paroxysmal Nocturnal Hemoglobinuria (PNH) AND ALL of the following: 
      1. The diagnosis was confirmed by flow cytometry with at least 2 independent flow cytometry reagents on at least 2 cell lineages (e.g., RBCs and WBCs) demonstrating that the patient’s peripheral blood cells are deficient in glycosylphosphatidylinositol (GPI) – linked proteins (lab tests required) AND
      2. The patient's hemoglobin is less than 10 g/dL (lab tests required) AND
      3. If the patient has NOT been previously treated with complement inhibitor therapy (e.g., Empaveli [pegcetacoplan], Soliris [eculizumab], or Ultomiris [ravulizumab-cwvz]) BOTH of the following (lab tests required):
        1. The patient has red blood cell clone size greater than or equal to 10% AND
        2. The patient has a lactate dehydrogenase (LDH) level greater than 1.5 times the upper limit of normal (ULN) AND
      4. ONE of the following:
        1. The patient has tried and had an inadequate response to ONE of the following:
          1. Empaveli (pegcetacoplan) 
          2. Soliris (eculizumab)
          3. Ultomiris (ravulizumab-cwvz) OR
        2. The patient has an intolerance or hypersensitivity to ONE of the following: 
          1. Empaveli (pegcetacoplan) 
          2. Soliris (eculizumab)
          3. Ultomiris (ravulizumab-cwvz) OR
        3. The patient has an FDA labeled contraindication to Empaveli (pegcetacoplan), Soliris (eculizumab), AND Ultomiris (ravulizumab-cwvz) OR
    2. The patient has another FDA labeled indication for the requested agent AND
  2. If the patient has an FDA labeled indication, then ONE of the following:
    1. The patient’s age is within FDA labeling for the requested indication for the requested agent OR
    2. There is support for using the requested agent for the patient’s age for the requested indication AND
  3. The prescriber is a specialist in the area of the patient’s diagnosis (e.g., hematologist) or the prescriber has consulted with a specialist in the area of the patient’s diagnosis AND
  4. The patient will NOT be using the requested agent in combination with Empaveli (pegcetacoplan), Soliris (eculizumab), or Ultomiris (ravulizumab-cwvz) for the requested indication AND
  5. The patient does NOT have any FDA labeled contraindications to the requested agent 

Length of Approval: 6 months

NOTE: If Quantity Limit applies, please refer to Quantity Limit Criteria.

*Step therapy requirement may not apply if a prior health plan paid for the medication - documentation of a paid claim may be required.

 

Renewal Evaluation

Target Agent(s) will be approved when ALL of the following are met:

  1. The patient has been previously approved for the requested agent through the plan’s Prior Authorization process [Note: patients not previously approved for the requested agent will require initial evaluation review]  AND
  2. The patient has had improvements or stabilization with the requested agent (e.g., decreased requirement of RBC transfusions, stabilization/improvement of hemoglobin, reduction of lactate dehydrogenase (LDH), stabilization/improvement of symptoms) (medical records required) AND
  3. The prescriber is a specialist in the area of the patient’s diagnosis (e.g., hematologist) or the prescriber has consulted with a specialist in the area of the patient’s diagnosis AND
  4. The patient will NOT be using the requested agent in combination with Empaveli (pegcetacoplan), Soliris (eculizumab), or Ultomiris (ravulizumab-cwvz) AND
  5. The patient does NOT have any FDA labeled contraindications to the requested agent 

Length of Approval: 12 months

NOTE: If Quantity Limit applies, please refer to Quantity Limit Criteria

QUANTITY LIMIT CLINICAL CRITERIA FOR APPROVAL

Module

Clinical Criteria for Approval

Quantity limit for the Target Agent(s) will be approved when ONE of the following is met:

  1. The requested quantity (dose) does NOT exceed the program quantity limit OR
  2. ALL of the following:
    1. The requested quantity (dose) exceeds the program quantity limit AND
    2. The requested quantity (dose) does NOT exceed the maximum FDA labeled dose for the requested indication AND
    3. The requested quantity (dose) cannot be achieved with a lower quantity of a higher strength that does NOT exceed the program quantity limit 

Length of Approval: Initial approval up to 6 months Renewal approval up to 12 months

This pharmacy policy is not an authorization, certification, explanation of benefits or a contract. Eligibility and benefits are determined on a case-by-case basis according to the terms of the member’s plan in effect as of the date services are rendered. All pharmacy policies are based on (i) information in FDA approved package inserts (and black box warning, alerts, or other information disseminated by the FDA as applicable); (ii) research of current medical and pharmacy literature; and/or (iii) review of common medical practices in the treatment and diagnosis of disease as of the date hereof. Physicians and other providers are solely responsible for all aspects of medical care and treatment, including the type, quality, and levels of care and treatment. 

The purpose of Blue Cross and Blue Shield of Alabama’s pharmacy policies are to provide a guide to coverage. Pharmacy policies are not intended to dictate to physicians how to practice medicine. Physicians should exercise their medical judgment in providing the care they feel is most appropriate for their patients. 

Neither this policy, nor the successful adjudication of a pharmacy claim, is guarantee of payment.

ALBP _  Commercial _ CSReg _ Fabhalta_iptacopan__PAQL _ProgSum_ 07-01-2024  _ © Copyright Prime Therapeutics LLC. May 2024 All Rights Reserved1