Metabolic Surgery for Obese Type 2 Diabetes: Korean Multicenter Cohort Study - Scorecard - MDSpire

Metabolic Surgery for Obese Type 2 Diabetes: Korean Multicenter Cohort Study

  • By

  • Young Suk Park

  • Soo Min Ahn

  • Sang Hyun Kim

  • Sung Il Choi

  • Kyung Won Seo

  • Han Hong Lee

  • Youngsung Suh

  • Ji Yeon Park

  • Sang Eok Lee

  • Sungsoo Park

  • Dong Jin Kim

  • In Cho

  • Yoo Min Kim

  • Songchang Shi

  • Tae Jung Oh

  • Yun-Suhk Suh

  • Ki Hyun Kim

  • Seungwan Ryu

  • Mi Kyung Kim

  • Do Joong Park

  • Seong-Ho Kong

  • Young Min Cho

  • In Gyu Kwon

  • Jong Suk Park

  • Minyoung Lee

  • Hyuk-Joon Lee

  • November 13, 2025

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Clinical Scorecard: Surgical Interventions for Type 2 Diabetes in Obese Patients: A Multicenter Study from Korea

At a Glance

CategoryDetail
ConditionType 2 diabetes mellitus (T2DM) in obese patients
Key MechanismsIncreased GLP-1 secretion enhancing insulin secretion and suppressing glucagon; changes in gut microbiota and bile acid metabolism improving insulin sensitivity
Target PopulationObese adults (BMI ≥ 30 kg/m²) with T2DM, specifically Korean/East Asian patients
Care SettingMetabolic/bariatric surgery performed by board-certified surgeons in specialized centers

Key Highlights

  • Metabolic/bariatric surgery (MBS) is effective for weight loss and T2DM remission, with SG and RYGB as common procedures.
  • RYGB generally yields greater weight loss and glycemic control but with potentially higher complexity and complications compared to SG.
  • East Asian populations develop T2DM at lower BMI thresholds, necessitating population-specific evidence for surgical decision-making.

Guideline-Based Recommendations

Diagnosis

  • T2DM diagnosis confirmed by HbA1c and fasting blood glucose levels.
  • Obesity defined as BMI ≥ 30 kg/m², with consideration of lower BMI thresholds in Asian populations.

Management

  • Consider metabolic/bariatric surgery for T2DM patients with BMI ≥ 30 kg/m², especially in Asian populations.
  • Choice between SG and RYGB should be individualized based on patient risk profile and expected outcomes.
  • Concomitant hiatal hernia repair performed when present during surgery.

Monitoring & Follow-up

  • Postoperative monitoring of T2DM remission defined by medication cessation and HbA1c < 6.0% or FBG < 100 mg/dL at 1 and 2 years.
  • Assessment of weight loss, hypertension, dyslipidemia, and postoperative complications per American Society of Metabolic and Bariatric Surgery criteria.

Risks

  • Potential surgical complications vary between SG and RYGB; SG has fewer complications but possibly less glycemic efficacy.
  • Consideration of gastric cancer risk in Korean patients influencing surgical approach (e.g., resectional gastric bypass).

Patient & Prescribing Data

Korean adults with obesity and T2DM undergoing SG or RYGB between 2019 and 2021

Both SG and RYGB lead to T2DM remission and weight loss; RYGB may offer superior glycemic outcomes but with increased complexity; population-specific data supports tailored surgical decisions.

Clinical Best Practices

  • Use IPTW with propensity scores to adjust for baseline differences in comparative studies of SG vs RYGB.
  • Perform surgeries by accredited metabolic and bariatric surgeons to ensure standardized technique and outcomes.
  • Define T2DM remission rigorously as cessation of diabetes medications with HbA1c < 6.0% or FBG < 100 mg/dL.
  • Consider ethnic and phenotypic differences in T2DM and obesity when applying international guidelines to East Asian patients.

References

Original Source(s)

Metabolic Surgery for Obese Type 2 Diabetes: Korean Multicenter Cohort Study

  • by Young Suk Park, Soo Min Ahn, Sang Hyun Kim, Sung Il Choi, Kyung Won Seo, Han Hong Lee, Youngsung Suh, Ji Yeon Park, Sang Eok Lee, Sungsoo Park, Dong Jin Kim, In Cho, Yoo Min Kim, Songchang Shi, Tae Jung Oh, Yun-Suhk Suh, Ki Hyun Kim, Seungwan Ryu, Mi Kyung Kim, Do Joong Park, Seong-Ho Kong, Young Min Cho, In Gyu Kwon, Jong Suk Park, Minyoung Lee, Hyuk-Joon Lee

  • November 13, 2025

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