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Ananda, Fannie Rizki
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Health Professions Medicine & Pharmacology Public Health

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CYP2A6 Genetic Polymorphism and Nicotine Metabolism of Male Smokers in Indonesia Soliha, Chaliza; Soeroso, Noni Novisari; Ananda, Fannie Rizki; Zain-Hamid, Rozaimah; Bihar, Syamsul; Lim, Darren Wan-Teck
Jurnal Respirasi Vol. 10 No. 2 (2024): May 2024
Publisher : Faculty of Medicine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jr.v10-I.2.2024.93-98

Abstract

Introduction: One of the main ingredients in cigarettes is nicotine, which has a significant impact on a person's dependence on cigarettes. Nicotine can be detected in a smoker's urine as a sign that his body is processing nicotine. The important enzyme CYP2A6 is involved in nicotine metabolism. This study aimed to determine the relationship between CYP2A6 genetic polymorphisms and nicotine metabolism among male smokers in Indonesia. Methods: This study included 100 male smokers who met the inclusion criteria in a cross-sectional design using a consecutive sampling between the ages of 20 and 65 years old. Restrictions fragment length polymorphism (RFLP) of the polymerase chain reaction (PCR) was applied to examine the genetic polymorphism of CYP2A6, and nicotine metabolite levels in urine were examined by high-performance liquid chromatography (HPLC) examination. Results: This study involved one hundred smokers, and 78 tested positive for the CYP2A6 polymorphism. The CYP2A6 genetic polymorphism and nicotine metabolism were not significantly correlated (p-value > 0.05). Allele *1A and genotype 1B/1B were more common in this study population. The majority of study participants had fast metabolic rates. Conclusion: No correlation was seen between the genetic polymorphisms of CYP2A6 and nicotine metabolism in Indonesian male smokers. Consequently, it is crucial to conduct future research in diverse populations with larger samples.
The Time to Progression in Lung Adenocarcinoma Patients Receiving First- and Second-Generation EGFR-TKI in Indonesia Syahruddin, Elisna; Soeroso, Noni Novisari; Ananda, Fannie Rizki; Wulandari, Laksmi; Setijadi, Ana Rima; Ermayanti, Sabrina; Pratiwi, Suryanti Dwi; Infianto, Andreas; Andayani, Novita; Munir, Sri Melati; Pratama, Avissena Dutha; Kusumawardani, Ida Ayu Jasminarti Dwi; Haryati, Haryati; Duyen, Natalie; Hanif, Muhammad Alfin; Lim, Darren Wan-Teck
Jurnal Respirasi Vol. 11 No. 1 (2025): January 2025
Publisher : Faculty of Medicine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jr.v11-I.1.2025.22-30

Abstract

Introduction: Targeted therapy, particularly epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI), is the first-line treatment for non-small cell lung cancer (NSCLC). However, drug resistance has grown in the last few decades. This study compared the progression time of lung cancer patients treated with first- and second-generation EGFR-TKI. Methods: Based on cytology and histological results, this cross-sectional study included 1,008 participants diagnosed with lung adenocarcinoma (LUAD) from 11 Indonesian Respiratory Centers. Every three months, the response to treatment was assessed using the Response Evaluation Criteria in Solid Tumours (RECIST) criteria in 1.1. Significant differences in the clinical features of the three TKI treatment groups were identified using logistic regression analysis, the median time to disease progression was estimated using the Kaplan-Meier technique, and independent prognostic factors related to the time to progression (TTP) were assessed using Cox proportional hazards regression. Results: This study examined 505 patients, the majority of whom were females (50.9%), never smoked (59.8%), diagnosed at an advanced stage (99.2%), and had an Eastern Cooperative Oncology Group (ECOG) scale of 0-1 (83.2%). Approximately 98.1% of patients were treated with afatinib (14.8%), erlotinib (18.6%), and gefitinib (66.1%) due to common mutations. The groups did not differ significantly (p>0.05). The median overall survival (OS) rate was 9 months. The time to LUAD progression in lung cancer was significantly impacted by poor performance (p=0.001). Conclusion: Epidermal growth factor receptor-tyrosine kinase inhibitor treatment can only prolong the TTP of LUAD by up to 9 months, and the performance scale when receiving the EGFR-TKI significantly affects the prognosis.
Co-Authors Ana Rima Setijadi Bihar, Syamsul Duyen, Natalie Elisna Syahruddin Ermayanti, Sabrina Hanif, Muhammad Alfin Haryati Haryati Ida Ayu Jasminarti Dwi Kusumawardani Infianto, Andreas Laksmi Wulandari Lim, Darren Wan-Teck Noni Novisari Soeroso Novita Andayani, Novita Pratama, Avissena Dutha Pratiwi, Suryanti Dwi Soliha, Chaliza Sri Melati Munir Zain-Hamid, Rozaimah