Cyramza® (Ramucirumab)

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Ramucirumab: AFP Analysis in REACH-2

Eligible participants for REACH-2 were required to have a baseline AFP ≥400 ng/mL, as determined by local laboratory testing.

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The information contained in this letter may not completely match the current local labeling for RAMUCIRUMAB. Please see local labeling approved in your country.

Study Design

A global, randomized, double-blind, placebo-controlled study compared ramucirumab plus BSC and placebo plus BSC in patients with advanced HCC and elevated baseline AFP following first-line sorafenib.1

Patients were stratified by

  • geographic region (Americas, Europe, Israel, and Australia vs Asia [except Japan] vs Japan)
  • baseline ECOG PS (0 vs 1), and
  • macrovascular invasion (yes vs no).1

Patients were randomly assigned (2:1) to receive ramucirumab 8 mg/kg plus BSC (n=197) or placebo plus BSC (n=95) every 14 days until disease progression or unacceptable toxicity, or until discontinuation criteria were met.1 

The primary endpoint was OS.1

Alpha-Fetoprotein and the REACH-2 Study

Protocol Requirements

Eligible participants were required to have a baseline AFP ≥400 ng/mL, as determined by local laboratory testing. The baseline serum AFP testing was determined by the local laboratory using a legally marketed AFP assay for the region in which the site was located.2

Serum AFP was assessed through a blood sample

  • at baseline (within 14 days prior to randomization)
  • every third cycle (every 6 weeks), and
  • within 7 days of study discontinuation.2

Selection of 400 ng/mL as Threshold

An AFP concentration above the threshold of 400 ng/mL has consistently defined a poorer prognostic group in several treatment settings and is an established parameter in prognostic scoring systems.3-6 The REACH trial results showed that ramucirumab was well tolerated in patients with HCC, with a potential OS benefit in a prespecified subpopulation of patients with baseline AFP ≥400 ng/mL, and no OS benefit in the subpopulation of patients with an AFP <400 ng/mL.2,7 Among the subgroup of patients with AFP ≥400 ng/mL in the REACH trial, patients who received ramucirumab had a median OS of 7.8 vs 4.2 months for the patients in the placebo group (HR=0.67; 95% CI: 0.51-0.90; p=.006).7 The results of the REACH trial provided justification for the continued exploration of ramucirumab in the population of patients with HCC and AFP ≥400 ng/mL after prior sorafenib (discontinued due to progression or intolerance). REACH-2 was designed to confirm the efficacy and safety of ramucirumab as a single agent for the treatment of patients with HCC who have an AFP ≥400 ng/mL after prior sorafenib therapy.2

Baseline Imbalance in AFP Between Treatment Arms

There was an imbalance in baseline AFP levels, with a 43% higher median AFP level in the ramucirumab arm (AFP=3920 ng/ml in ramucirumab arm vs AFP=2741 ng/ml in the placebo arm).2

The imbalance in baseline AFP was corrected by creating a pooled analysis of the prespecified subgroup of patients with AFP ≥400 ng/mL in REACH with patients in REACH-2. Among patients included in this pooled analysis, the baseline AFP was

  • 4101.6 in patients who received ramucirumab plus BSC (n=316), and
  • 4047.5 in patients who received placebo plus BSC (n=226).8

By pooling both sources it allows for a larger sample size, yielding a more precise estimate of treatment effects for the overall population and subgroups.8

Response According to AFP

A post hoc analysis of data from REACH-2 evaluated whether baseline AFP and changes in AFP during treatment were predictive of efficacy outcomes. Baseline AFP was a significant continuous prognostic factor for OS (p<.0001), and AFP remained the predominant prognostic factor after adjusting for macrovascular invasion, ECOG PS, and treatment (Prognostic Value of Baseline Alpha-Fetoprotein by Cox Regression Model in REACH-2). A consistent OS benefit with ramucirumab treatment was observed in all of the AFP baseline subgroups, and point estimates for HRs consistently remained below 1.0 in the STEPP analysis (Overall Survival Hazard Ratio by Median Baseline Alpha-Fetoprotein in REACH-2 (ITT Population)).9,10

Prognostic Value of Baseline Alpha-Fetoprotein by Cox Regression Model in REACH-29

Prognostic Scenario

Hazard Ratio (95% CI)

P Value

AFP (ng/mL) log-transformeda

1.59 (1.32-1.91)

<.0001

Multivariate analysisb

AFP (ng/mL) log-transformed

1.58 (1.31-1.91)

<.0001

ECOG PS (0 vs 1)

0.68 (0.52-0.89)

.0056

Macrovascular invasion (yes vs no)

1.44 (1.09-1.89)

.0100

Abbreviations: AFP = alpha-fetoprotein; ECOG = Eastern Cooperative Oncology Group; PS = performance status.

aAdjusting for baseline AFP and treatment only.

bAdjusting for baseline AFP, treatment, macrovascular invasion, and ECOG PS.

Overall Survival Hazard Ratio by Median Baseline Alpha-Fetoprotein in REACH-2 (ITT Population)10

Abbreviations: AFP = alpha-fetoprotein; ITT = intent-to-treat.

References

1Zhu AX, Kang YK, Yen CJ, et al. REACH-2: A randomized, double-blind, placebo-controlled phase 3 study of ramucirumab versus placebo as second-line treatment in patients with advanced hepatocellular carcinoma (HCC) and elevated baseline alpha-fetoprotein (AFP) following first-line sorafenib. Presented as an oral presentation at: 54th Annual Meeting of the American Society of Clinical Oncology (ASCO); June 1-5, 2018; Chicago, IL. Abstract #4003. https://meetinglibrary.asco.org/record/159169/abstract

2Data on file, Eli Lilly and Company and/or one of its subsidiaries.

3The Cancer of the Liver Italian Program (Clip) investigators. A new prognostic system for hepatocellular carcinoma: a retrospective study of 435 patients. Hepatology. 1998;28(3):751-755. https://doi.org/10.1002/hep.510280322

4Tangkijvanich P, Anukulkarnkusol N, Suwangool P, et al. Clinical characteristics and prognosis of hepatocellular carcinoma: analysis based on serum alpha-fetoprotein levels. J Clin Gastroenterol. 2000;31(4):302-308. https://insights.ovid.com/pubmed?pmid=11129271

5Zhang XF, Meng B, Qi X, et al. Prognostic factors after liver resection for hepatocellular carcinoma with hepatitis B virus-related cirrhosis: the surgeon's role in survival. Eur J Surg Oncol. 2009;35(6):622-628. https://doi.org/10.1016/j.ejso.2008.08.003

6Mailey B, Artinyan A, Khalili J, et al. Evaluation of absolute serum α-fetoprotein levels in liver transplant for hepatocellular cancer. Arch Surg. 2011;146(1):26-33. http://dx.doi.org/10.1001/archsurg.2010.295.

7Zhu AX, Park JO, Ryoo BY et al. Ramucirumab versus placebo as second-line treatment in patients with advanced hepatocellular carcinoma following first-line therapy with sorafenib (REACH): a randomised, double-blind, multicentre, phase 3 trial. Lancet Oncol. 2015;16(7):859-870. http://dx.doi.org/10.1016/S1470-2045(15)00050-9

8Zhu AX, Finn RS, Galle PR, et al. Ramucirumab as second-line treatment in patients with advanced hepatocellular carcinoma (HCC) and elevated alpha-fetoprotein (AFP) following first-line sorafenib: pooled efficacy and safety across two global randomized phase 3 studies (REACH-2 and REACH). Poster presented at: 20th Annual Meeting of the European Society for Medical Oncology (ESMO) World Congress on Gastrointestinal Cancer; June 20-23, 2018; Barcelona, Spain. Accessed February 17, 2021. https://www.postersessiononline.eu/173580348_eu/congresos/20wcgic/aula/-LB_1_20wcgic.pdf

9Zhu AX, Finn RS, Kang YK, et al. Serum alpha-fetoprotein and clinical outcomes in patients with advanced hepatocellular carcinoma treated with ramucirumab. Br J Cancer. 2021;124(8):1388-1397. https://doi.org/10.1038/s41416-021-01260-w

10Zhu AX, Galle PR, Llovet JM, et al. Prognostic and predictive value of baseline alpha-fetoprotein (AFP) in patients with advanced hepatocellular carcinoma (HCC) treated with ramucirumab from two phase 3 studies (REACH, REACH-2). Poster presented at: Annual Meeting of European Society for Medical Oncology (ESMO Virtual); September 27-October 1, 2019. Accessed February 17, 2021. https://oncologypro.esmo.org/meeting-resources/esmo-2019-congress

Glossary

AFP = alpha-fetoprotein

BSC = best supportive care

ECOG = Eastern Cooperative Oncology Group

HCC = hepatocellular carcinoma

HR = hazard ratio

OS = overall survival

PS = performance status

STEPP = subpopulation treatment effect pattern plot

Fecha de la última revisión: 2018 M11 30


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